At the 40th meeting, the Emergency Committee under the International Health Regulations (IHR) reviewed the data on wild poliovirus (WPV1) and circulating vaccine derived polioviruses (cVDPV) in the context of the global target of interruption and certification of WPV1 eradication by 2027 and interruption and certification of cVDPV2 elimination by 2029. Technical updates were received about the situation in Afghanistan, Cameroon, France, Ghana, Indonesia, Nigeria, occupied Palestinian territory (oPt), Pakistan, Spain and Zimbabwe.
The Committee unanimously agreed that the risk of international spread of poliovirus still remains a Public Health Emergency of International Concern (PHEIC) and recommended the extension of Temporary Recommendations for a further three months.
Risk categories and advice aimed at reducing the risk of international spread of WPV1 and cVDPVs:
Wild poliovirus was reported in the following countries in 2024 and as of 2 Dec 2024:
Circulating vaccine derived poliovirus (cVDPV) in 2024 and as of 2 Dec 2024:
In 2024 and as of 8 November, approximately 480’000 chikungunya cases and 190 deaths have been reported worldwide.
The majority of countries reporting high chikungunya disease burden are from the Americas, especially in Brazil (403’726 cases, 190 deaths), Paraguay (2’744 cases), Argentina (768 cases, and Bolivia (418 cases).
In Asia, most cases are reported from India (69’544 cases), followed by Pakistan (4’964 cases and Thailand (584 cases).
In Africa, in 2024, chikungunya cases were reported from Senegal and La Réunion.
Of note, chikungunya is endemic in most subtropical and tropical countries, even if this is not shown on this map.
Within the last 12 months (November 2023 to October 2024), the notification rate of chikungunya cases per 100’000 population was reported as follows:
Optimal mosquito protection 24/7 (during the day against dengue, zika, chikungunya etc., at dusk and at night against malaria). In case of fever, ensure adequate hydrations and apply paracetamol products. If you have a fever, avoid taking medications containing acetylsalicylic acid (e.g., Aspirin®), as this can increase the risk of bleeding during a dengue infection. However, do not stop taking medications containing acetylsalicylic acid if it is already part of your regular treatment for an underlying condition.
In case of fever, malaria should be ruled out by blood tests.
In the past 3 months, vaccine-derived poliovirus type 2 (VDPV2) was detected in sewage samples in Barcelona, Spain; Warsaw, Poland; and Bonn, Düsseldorf, Dresden, Hamburg, Cologne, Mainz and Munich, Germany. The detected virus is genetically linked to a strain that emerged in Nigeria. This strain is circulating in several countries outside the Region, most widely in North and West Africa.
In all 3 countries in the European Region, the virus was isolated from environmental (sewage) samples only – no associated paralytic cases of polio have been detected.
Germany, Poland and Spain maintain strong disease surveillance and high levels of routine immunization coverage, estimated at 85–93% nationally with 3 doses of inactivated polio vaccine (IPV), which provides excellent protection from paralysis caused by poliovirus.
However, pockets of undervaccination exist in every country.
The detection of VDPV2 in wastewater is not surprising. People can shed the virus if they come from or have travelled to countries where oral poliovirus vaccine is still used. The risk for vaccinated people in Germany is very low due to the high vaccination coverage against polio.
For all individuals, including refugees and migrants: routine vaccination against polio according to national guidelines is important (Swiss FOPH recommendations |STIKO, Germany recommendations). Travellers going to countries where wild poliovirus or polio vaccine virus is endemic should get vaccinated against polio, see recommendations on the country pages at www.healthytravel.ch.
In 2024, 22’379 cases of whooping cough have been reported to the Robert Koch Institute (RKI) so far, already the highest annual number of cases since the nationwide reporting requirement was introduced in 2013. The average weekly incidence from 2020 to 2024 is twice as high as in the pre-pandemic years 2015 to 2019.
Pertussis incidence: cases per 100’000 population and week:
This is a reminder that a travel medicine consultation is an opportunity to check pertussis vaccination status.
Swiss recommendations: After the basic immunization against pertussis, booster doses are recommended in adolescents (11-15 years) and adults (25-29 years). Booster vaccination is also indicated in every pregnancy. In addition, adolescents and adults of all ages should receive a pertussis vaccination if there is regular contact with infants under 6 months of age due to work or family and the last vaccination against pertussis was 10 years ago or longer.
The National Center for Epidemiology, Prevention and Control of Diseases (CDC Peru) of the Ministry of Health (Minsa) has issued an epidemiological alert due to the increase in cases of dengue nationwide, associated with factors such as climatic variability and the circulation of the DENV-3 serotype.
An upward trend has been observed since week 40.
Prevention: Optimal mosquito bite protection 24/7, also in cities (also against other mosquito-borne diseases such as malaria, Zika, chikungunya).
In case of fever, ensure adequate hydrations and apply paracetamol products. If you have a fever, avoid taking medications containing acetylsalicylic acid (e.g., Aspirin®), as this can increase the risk of bleeding during a dengue infection. However, do not stop taking medications containing acetylsalicylic acid if it is already part of your regular treatment for an underlying condition.
In case of fever, malaria should be always ruled out by blood tests.
Note on vaccination against dengue fever with Qdenga®:
The Swiss Expert Committee for Travel Medicine (ECTM) recommends a vaccination with Qdenga® only for travelers from 6 years old who have evidence of previous dengue infection and who will be exposed in a region with significant dengue transmission. For details, see ECTM Statement.
The Fresno County Department of Public Health (FCDPH) is reporting a human rabies death, the first such case since 1992 in the county.
Officials say the Fresno County resident is suspected to have been bitten by a bat in Merced County in mid-October. The individual died on November 22 after one week of hospitalization.
Rabies can be transmitted by any mammals, including bats.
Prevention: Avoid contact with animals and do not feed them! Pre-exposure vaccination is particularly recommended for travellers with increased individual risk (working with animals, travel on two-wheelers, to remote areas, young children, cave explorers, possible contact with bats, etc.).
Behavior after exposure: After an animal bite/scratch: immediately wash the wound with water and soap for 15 minutes, then disinfect and in any case visit a medical center for post-exposure vaccination as soon as possible! For more information: see Flyer rabies.
Global: over 14 million cases, 10,000 deaths
Americas: over 12 million cases, 7’000 deaths (largest outbreak in history!)
Africa: over 100,000 dengue cases
Asia:
Prevention: Optimal mosquito bite protection 24/7, also in cities (also against other mosquito-borne diseases such as malaria, Zika, chikungunya).
In case of fever, ensure adequate hydrations and apply paracetamol products. If you have a fever, avoid taking medications containing acetylsalicylic acid (e.g., Aspirin®), as this can increase the risk of bleeding during a dengue infection. However, do not stop taking medications containing acetylsalicylic acid if it is already part of your regular treatment for an underlying condition.
In case of fever, malaria should be always ruled out by blood tests.
Note on vaccination against dengue fever with Qdenga®:
The Swiss Expert Committee for Travel Medicine (ECTM) recommends a vaccination with Qdenga® only for travelers from 6 years old who have evidence of previous dengue infection and who will be exposed in a region with significant dengue transmission. For details, see ECTM Statement.
Within three weeks, mpox cases have increased by +4’758 to cumulative 14’078 confirmed cases (all clades), including 55 deaths. The following countries have reported new cases of clade I between 03 to 24 Nov 2024:
No new clade I cases have been reported within 3 weeks from Congo (22 clade Ia cases), Zimbabwe (2 clade Ib cases), and Zambia (1 clade Ib case).
A significant number of suspected mpox cases, that are clinically compatible with mpox remain untested due to limited diagnostic capacity in some African countries and thus never get confirmed.
For updates, details, suspected cases, epidemic curves, see WHO LINK).
Follow local media and local health authority advice. Prevention measures should be followed during a stay in countries where mpox is endemic/epidemic (see also Factsheet Mpox).
General precautions
Vaccination
A vaccination against mpox is available (Jynneos®, manufactured by Bavarian Nordic). The Swiss Expert for Travel Medicine recommends vaccination against mpox in following situations, as of 3 October 2024 (the recommendation will be updated regularly depending on the development of the outbreak):
1. People staying or travelling to Province Equateur and / or Eastern D.R. Congo (South/North Kivu) and / or Burundi in case of:
2. People staying outside of Province Equateur and / or Eastern D.R. Congo (South/North Kivu) and / or Burundi (worldwide) in case of:
At the present time, it is assumed that the available vaccine against mpox (e.g. Jynneos®) is also effective against clade I. This vaccine is considered safe and highly effective in preventing severe mpox disease.
In case of symptoms
If you are diagnosed with mpox:
For clinicians:
Further information on evaluation and diagnosis: see CDC LINK.
Since mid of November 2024, six foreign tourists died and at least four other people got ill after drinking tainted alcohol in Vang Vieng, Vientiane Province. News reports and testimonies suggest the tourists may have consumed alcohol laced with methanol.
Methanol poisoning and deaths due to adulterated alcoholic beverages are frequently reported in many countries all over the world.
Worldwide, there were an estimated 10.3 million cases of measles in 2023, a 20% increase from 2022, according to new estimates from the World Health Organization (WHO) and the U.S. Centers for Disease Control and Prevention (CDC). Inadequate immunization coverage globally is driving the surge in cases.
As a result of global gaps in vaccination coverage, 57 countries experienced large or disruptive measles outbreaks in 2023, affecting all regions except the Americas, and representing a nearly 60% increase from 36 countries in the previous year. The WHO African, Eastern Mediterranean, European, Southeast Asia and Western Pacific regions experienced a substantial upsurge in cases. Nearly half of all large or disruptive outbreaks occurred in the African region.
This is a reminder: Travel medicine consultation is a good opportunity to check measles vaccination status.
Swiss recommendations: all persons born after 1963 who have no documented protection against the infection (antibodies or 2 documented vaccinations) should be vaccinated twice with MMR vaccine. In the event of an epidemic in the region or contact with a measles case, vaccination is recommended from the age of 6 months.
In 2024 and as of 15 November 2024, Dengue cases were reported in the following countries:
Burkina Faso: a total of 89’728 dengue cases (91 deaths) have been reported in all 13 regions. Most cases (51%) have been reported from the Center region. DENV-1 and DENV-3 viruses have been identified.
Cabo Verde: a total of 35’230 dengue cases (14’137 confirmed; 21’093 suspected cases ) have been reported from all nine islands. Santiago Island accounted for 82% of all confirmed cases. Serotypes DENV-1 and DENV-3 were detected.
Senegal: a total of 181 confirmed dengue cases have been identified in nine regions in Senegal, with Pikine district in Dakar region having the most cases (16), 20% of all cases. Other regions reporting a high number of cases include Thies 16 (20.0%), Louga 7 (9.0%), Fatick 6 (7.0%), Kaffrine 6 (7.0%), and Saint-Louis 4 (5.0%).
Sudan: Dengue is currently emerging as a public health problem in most states of Sudan with more than 6’000 cases reported.
Prevention: Optimal mosquito bite protection 24/7, also in cities (also against other mosquito-borne diseases such as malaria, Zika, chikungunya).
In case of fever, apply paracetamol products and hydration. If you have a fever, avoid taking medications containing acetylsalicylic acid (e.g., Aspirin®), as this can increase the risk of bleeding during a dengue infection. However, do not stop taking medications containing acetylsalicylic acid if it is already part of your regular treatment for an underlying condition.
In case of fever, malaria should be always ruled out by blood tests.
Note on vaccination against dengue fever with Qdenga®:
The Swiss Expert Committee for Travel Medicine (ECTM) recommends a vaccination with Qdenga® only for travelers from 6 years old who have evidence of previous dengue infection and who will be exposed in a region with significant dengue transmission. For details, see ECTM Statement.
After a trip to Zimbabwe, African trypanosomiasis was diagnosed in a traveler in Vienna. The patient is hospitalized and under treatment.
African trypanosomiasis, also called sleeping sickness, is endemic in many Subsaharan countries (see map).
It is transmitted by Tsetse flies. These flies are mainly attracted by bright, dark (especially blue) colours. They inhabit rural areas, including forests and savannah areas, and areas of thick vegetation along rivers and waterholes, depending on the fly species. Tsetse flies bite during the day, <1% are infected. Risk for infection in travelers increases with the number of fly bites, which does not always correlate with duration of travel. People most likely to be exposed to African trypanosomiasis infection are hunters and villagers with infected cattle herds. Tourists and other people working in or visiting game parks are at risk for contracting African trypanosomiasis if they spend long periods in rural areas where the disease is present. Travelers to urban areas are at minimal risk, although transmission has been observed in some urban settings in the past.
For details, see WHO Factsheet.
As of 13 November 2024, a total of 494 confirmed cases of mpox and one death have been reported in Uganda. Confirmed cases have been reported in 38 districts, with the most affected districts including Kampala (61% of cases), Wakiso and Nakasongola. For details, see LINK.
Follow local media and local health authority advice. The following prevention measures should be followed during a stay in countries where mpox is endemic/epidemic (see also Factsheet Mpox).
General precautions
Vaccination
A vaccination against mpox is available (Jynneos®, manufactured by Bavarian Nordic). The Swiss Expert for Travel Medicine recommends vaccination against mpox in following situations, as of 3 October 2024 (the recommendation will be updated regularly depending on the development of the outbreak):
1. People staying or travelling to Province Equateur and / or Eastern D.R. Congo (South/North Kivu) and / or Burundi in case of:
2. People staying outside of Province Equateur and / or Eastern D.R. Congo (South/North Kivu) and / or Burundi (meaning worldwide) in case of:
At the present time, it is assumed that the available vaccine against mpox (e.g. Jynneos®) is also effective against clade I. This vaccine is considered safe and highly effective in preventing severe mpox disease.
In case of symptoms
If you are diagnosed with mpox:
For clinicians:
In the province of Córdoba, an outbreak of trichinellosis has caused a health alarm after the Ministry of Health confirmed 41 cases in 5 localities.
Trichinella infections are frequently reported in Argentina. Homemade sausage foods do not usually go through sanitary and may be sold on the routes and roads of the country.
Trichinellosis is caused by the larvae of an intestinal worm when eating insufficiently cooked meat (mainly pork, but also game and other animals such as bear). Symptoms vary widely: muscle pain, inflammation of the eyelids and eye pain, diarrhea, and fever. Cardiac and neurological complications are possible, and the disease is sometimes fatal.
On 8 November 2024, the Centers for Disease Control and Prevention (CDC), reported a higher than expected number of US travellers returning from the state of Telangana in India with chikungunya.
According to WHO, between 1 January and 20 October 2024, over 7.3 million malaria cases and 1’157 deaths (CFR 0.02%) were reported in Ethiopia (estimated population of around 124 million). Of the total cases reported in 2024, majority (95%) were laboratory-confirmed, with Plasmodium falciparum accounting for more than two-thirds of the cases. By contrast, in 2023, 4.1 million malaria cases including 527 deaths were reported, of which Plasmodium falciparum accounted for approximately 70% of all reported cases.
Four regions accounted for 81% of the reported cases and 89% of health facility malaria deaths in 2024: Oromia (44% cases; 667 deaths), Amhara (18% cases; 56 deaths), Southwest (12% cases; 250 deaths) and South Ethiopia Regional State (7% cases; 45 deaths). Due to favorable geo-ecological conditions, the Western part of the country is experiencing a high malaria burden and is highly affected by the current unprecedented surge as shown in the incidence map for week 42.
The increasing trend in the number of annual cases and endemic areas are likely influenced by reduced vector control efforts, exacerbated by acute and protracted conflicts affecting some Regional States.
Challenges remain in delivering essential health care services, including malaria treatment, in health facilities due to access challenges and barely functioning health facilities in areas affected by conflicts. The presence of other concurrent disease outbreaks and humanitarian emergencies in the country further exacerbates these challenges. WHO assesses the national risk for malaria in Ethiopia as high due to multiple factors including the spread of Anopheles stephensi, drought and food insecurity, climate change-induced extreme weather events and ongoing conflicts.
Geographical distribution of Malaria cases as of 20 October 2024:
The death of a young man who was bitten by a pet dog has triggered a debate about the spread of rabies in Morocco.
According to data from the Ministry of Health and Social Protection, Morocco recorded 414 cases of rabies between 2000 and 2020, averaging 20 cases per year, with 180 of these cases involving children under 15.
Information about rabies and what to do if exposed is important for all travellers!
Prevention: Avoid contact with animals! Do not feed animals either! Pre-exposure vaccination is particularly recommended for travelers with increased individual risk (working with animals, travel on two-wheelers, to remote areas, young children, cave explorers, possible contact with bats, frequent travels etc.).
Behavior after exposure: After an animal bite/scratch: immediately wash the wound with water and soap for 15 minutes, then disinfect and in any case visit a medical center for post-exposure vaccination as soon as possible! For more information: see Flyer rabies.
Zika is endemic in Thailand. CDC does not classify Thailand as an area with a current outbreak (see CDC map).
Optimal mosquito bite protection 24/7, also in cities (during the day against dengue, chikungunya, Zika and other viruses, at dusk and at night against malaria).
For detailed ECTM recommendations on Zika, see link. In case of fever, malaria should always be ruled out by blood test.
On 27 September 2024, Rwanda reported its first Marburg virus disease outbreak (MVD), see also previous EpiNews.
Marburg virus disease (MVD) is a rare but severe hemorrhagic fever, caused by Marburg virus (MARV). Although MVD is uncommon, MARV has the potential to cause outbreaks with significant case fatality rates (up to 88%). All recorded MVD outbreaks have originated in Africa.
Transmission: Fruit bats are the natural reservoir of MARV. The majority of MVD outbreaks have been connected to human entry into bat-infested mines and caves. Humans can also get infected by direct contact with an infected animal (e.g., non-human primate).
Person-to-person transmission occurs by direct contact (through broken skin or mucous membranes) with infected blood, secretions, and body fluids or by indirect contact with contaminated surfaces and materials like clothing, bedding and medical equipment. MVD is not an airborne disease, and a person is not contagious before symptoms appear. As a result, if proper infection prevention and control precautions are strictly followed, the risk of infection is regarded as minimal.
Incubation period: usually five to ten days (range 2-21 days).
Symptoms: The onset of MVD is usually abrupt, with non-specific, flu-like symptoms such as a high fever, severe headache, chills and malaise. Rapid worsening occurs within 2–5 days for more than half of patients, marked by gastrointestinal symptoms such as anorexia, abdominal discomfort, severe nausea, vomiting, and diarrhea. In severe cases, a rash may develop, along with bleeding from various body areas.
Treatment: There are several experimental drugs and vaccines for Marburg, but none has been licensed to date.
Further information, see ECDC Factsheet Marburg Virus, CDC.
Follow media and official reports! Follow all the recommendations of the local health authorities!
Travellers should be made aware of the ongoing outbreak. The risk for travellers to Rwanda is assessed as low, but it is high for family members and caregivers who have contact with sick people.
Preventive measures:
Upon return from Rwanda:
In case of symptoms:
If you develop fever and nonspecific symptoms such as chills, headache, muscle pain or abdominal pain:
For clinicians:
According to WHO, between 2 to 29 September 2024 (week 36 to 39), 17 countries shared their meningitis epidemiological data.
Epidemic:
Alert:
For previous epidemics and alerts, see EpiNews or news at www.healthytravel.ch.
Vaccination with a quadrivalent meningococcal conjugate vaccine (Menveo® or Nimenrix®) is recommended:
If no alert or epidemic is reported, vaccination is recommended for travel to the ‘meningitis belt’ during the dry season (typically occurring from December to June) across sub-Saharan Africa if
Ethiopia is facing a significant malaria crisis, reporting a total of 5’723’754 cases from 1 January to 15 September 2024. Four regions of Oromia, Amhara, Southwest, and South Ethiopia Regional State comprise 80.0% of all cases. The resurgence of Malaria in Ethiopia is exacerbated by the suspension of malaria control programs, especially in conflict-affected regions, which has created vulnerable living conditions due to displacement, among others.
In Epidemiological Week 36 alone, there were 227’675 malaria cases and 18 deaths. A significant proportion of the cases (over 81.0%) came from four regions: Oromia (440%), Amhara (18.0%), Southwest (12.0%), and South Ethiopia Regional State (7.0%). Of the cases in week 36, 98.0% were confirmed through laboratory testing, and Plasmodium falciparum accounted for 62.0%
Prevention: Optimal mosquito bite protection 24/7, also in cities (also against other mosquito-borne diseases such as malaria, Zika, chikungunya).
In case of fever, apply paracetamol products and hydration. If you have a fever, avoid taking medications containing acetylsalicylic acid (e.g., Aspirin®), as this can increase the risk of bleeding during a dengue infection. However, do not stop taking medications containing acetylsalicylic acid if it is already part of your regular treatment for an underlying condition.
In case of fever, malaria should be always ruled out by blood tests.
Note on vaccination against dengue fever with Qdenga®:
The Swiss Expert Committee for Travel Medicine (ECTM) recommends a vaccination with Qdenga® only for travelers from 6 years old who have evidence of previous dengue infection and who will be exposed in a region with significant dengue transmission. For details, see ECTM Statement.
While further information is pending, in addition to the basic immunization against polio, a booster vaccination is recommended for:
On 28 October 2024, the US Center of Disease Control and Prevention reported a suspected imported case of Lassa fever in an Iowa resident. The case recently to West Africa (country unspecified) in early October 2024 and became ill upon return and was isolated in a hospital where he died end of October.
Lassa fever is endemic in West Africa with 100’000 to 300’000 cases reported each year.
Sporadic cases have been reported among returning travellers: In the past 10 years, EU/EEA countries have reported seven Lassa fever cases to ‘The European Surveillance System’ (TESSy). Two cases were reported by the UK (ex-Nigeria and ex-Mali) in 2009, one by Sweden (ex-Liberia) in 2016, two by Germany (ex-Togo and a secondary case infected in Germany) in 2016 and two by the Netherlands (ex-Sierra Leone) in 2019. In the USA, there have been nine imported Lassa fever cases since 1969.
The NHS has sounded an alarm with a 10-day COVID warning, calling for vigilance as the number of cases climbs. According to recent figures released by the UK Health Security Agency (UKHSA), there's been a 17.8% week-on-week increase in COVID infections in England and a sharp 27.3% rise in related fatalities.
In the EU/EEA, there has been a downward trend of COVID-19 activity since the peak in July 2024, including in most of the countries that experienced a later epidemic during the summer. People aged 65 years and above continue to represent the main age group at risk of hospitalization and severe outcomes due to COVID-19.
On 27 September 2024, Rwanda reported its first Marburg virus disease outbreak (see EpiNews as of 3 Oct 2024). Updates as of 18.10.2024:
Marburg virus disease (MVD) is a rare but severe hemorrhagic fever, caused by Marburg virus (MARV). Although MVD is uncommon, MARV has the potential to cause outbreaks with significant case fatality rates (up to 88%). All recorded MVD outbreaks have originated in Africa.
Transmission: Fruit bats are the natural reservoir of MARV. The majority of MVD outbreaks have been connected to human entry into bat-infested mines and caves. Humans can also get infected by direct contact with an infected animal (e.g., non-human primate).
Person-to-person transmission occurs by direct contact (through broken skin or mucous membranes) with infected blood, secretions, and body fluids or by indirect contact with contaminated surfaces and materials like clothing, bedding and medical equipment. MVD is not an airborne disease, and a person is not contagious before symptoms appear. As a result, if proper infection prevention and control precautions are strictly followed, the risk of infection is regarded as minimal.
Incubation period: usually five to ten days (range 2-21 days).
Symptoms: The onset of MVD is usually abrupt, with non-specific, flu-like symptoms such as a high fever, severe headache, chills and malaise. Rapid worsening occurs within 2–5 days for more than half of patients, marked by gastrointestinal symptoms such as anorexia, abdominal discomfort, severe nausea, vomiting, and diarrhea. In severe cases, a rash may develop, along with bleeding from various body areas.
Treatment: There are several experimental drugs and vaccines for Marburg, but none has been licensed to date.
Further information, see ECDC Factsheet Marburg Virus, CDC
WHO assesses the risk of this outbreak as very high at the national level, high at the regional level, and low at the global level.
ECDC assess the overall risk for EU/EEA citizens visiting or living in Rwanda as low. This is because the likelihood of exposure to MVD – considering the low number of cases reported and the mode of transmission – and the impact are both assessed as low. For details, see LINK.
Follow media and official reports! Follow all the recommendations of the local health authorities!
Travellers should be made aware of the ongoing outbreak. The risk for travellers to Rwanda is assessed as low, but it is high for family members and caregivers who have contact with sick people.
Preventive measures:
Upon return from Rwanda:
In case of symptoms
If you develop fever and nonspecific symptoms such as chills, headache, muscle pain or abdominal pain:
For clinicians:
In urban districts of Hong Kong further cases of melioidosis were confirmed. Melioidosis is endemic in Hong Kong, though case numbers are low (18 so far in 2024). This serves as a reminder that this infection – though commonly associated with out-door and rural environments – is indeed also endemic in metropolitan surroundings.
Melioidosis is an endemic disease in Asia and Northern Australia. Cases have also been reported from Africa, the Caribbean basin, and the Americas. Cases may increase after hurricanes, heavy rain, typhoons, and other severe weather events.
Melioidosis mainly affects people who have direct contact with soil and water. Many have an underlying predisposing condition such as diabetes (most common risk factor), renal and liver disease, and others. Information on melioidosis: see CDC.
On 27 September 2024, Rwanda reported its first Marburg virus disease outbreak (see EpiNews as of 3 Oct 2024).
Marburg virus disease (MVD) is a rare but severe hemorrhagic fever, caused by Marburg virus (MARV). Although MVD is uncommon, MARV has the potential to cause outbreaks with significant case fatality rates (up to 88%). All recorded MVD outbreaks have originated in Africa.
Transmission: Fruit bats are the natural reservoir of MARV. The majority of MVD outbreaks have been connected to human entry into bat-infested mines and caves. Humans can also get infected by direct contact with an infected animal (e.g., non-human primate).
Person-to-person transmission occurs by direct contact (through broken skin or mucous membranes) with infected blood, secretions, and body fluids or by indirect contact with contaminated surfaces and materials like clothing, bedding and medical equipment. MVD is not an airborne disease, and a person is not contagious before symptoms appear. As a result, if proper infection prevention and control precautions are strictly followed, the risk of infection is regarded as minimal.
Incubation period: usually five to ten days (range 2-21 days).
Symptoms: The onset of MVD is usually abrupt, with non-specific, flu-like symptoms such as a high fever, severe headache, chills and malaise. Rapid worsening occurs within 2–5 days for more than half of patients, marked by gastrointestinal symptoms such as anorexia, abdominal discomfort, severe nausea, vomiting, and diarrhea. In severe cases, a rash may develop, along with bleeding from various body areas.
Treatment: There are several experimental drugs and vaccines for Marburg, but none has been licensed to date.
Further information, see ECDC Factsheet Marburg Virus, CDC.
WHO assesses the risk of this outbreak as very high at the national level, high at the regional level, and low at the global level.
ECDC assess the overall risk for EU/EEA citizens visiting or living in Rwanda as low. This is because the likelihood of exposure to MVD – considering the low number of cases reported and the mode of transmission – and the impact are both assessed as low. For details, see LINK.
Follow media and official reports! Follow all the recommendations of the local health authorities!
Travellers should be made aware of the ongoing outbreak. The risk for travellers to Rwanda is assessed as low, but it is high for family members and caregivers who have contact with sick people.
Preventive measures:
Upon return from Rwanda:
In case of symptoms
If you develop fever and nonspecific symptoms such as chills, headache, muscle pain or abdominal pain:
For clinicians:
Information about rabies and what to do if exposed is important for all travellers!
Prevention: Avoid contact with animals and do not feed them! Pre-exposure vaccination is particularly recommended for travellers with increased individual risk (working with animals, travel on two-wheelers, to remote areas, young children, cave explorers, possible contact with bats, etc.).
Behavior after exposure: After an animal bite/scratch: immediately wash the wound with water and soap for 15 minutes, then disinfect and in any case visit a medical center for post-exposure vaccination as soon as possible! For more information: see Flyer rabies.
On 13 September 2024, the IHR NFP for Barbados notified WHO of one confirmed human infection with West Nile Virus (WNV) in a child. This marks the first detected human case of WNV reported from Barbados.
Additionally, no infections have been previously documented in birds or horses in this country, making this case both unusual and unexpected. However, the WNV has spread throughout the Caribbean, likely via infected migratory birds. It is possible that the virus is circulating in birds and horses undetected.
West Nile viruses belong to the flavivirus family and are transmitted by Culex mosquitoes. The main hosts are birds; humans are false hosts. Most cases are asymptomatic; clinically symptomatic cases develop fever and meningitis or encephalitis. Elderly persons, pregnant women and immunosuppressed persons are at higher risk for a neuroinvasive form of the disease.
The following precautions are recommended:
The number of people affected by leptospirosis and related deaths in Kerala is increasing. In the first 4 days of October 2024 alone, 45 people were diagnosed with the disease.
According to the Health Department, from 1 Jan to 4 Oct 2024, a total of 2’512 people have been diagnosed with leptospirosis, including 155 confirmed deaths. Additionally, 1’979 people sought treatment for symptoms related to the illness. Similarly, 131 deaths suspected to be caused by leptospirosis symptoms were also reported.
Health officials warn that the disease is now spreading during all seasons.
Leptospirosis: Leptospires are transmitted via the urine of rodents (especially rats), e.g. in water residues (rivulets, puddles, etc.) or mud. Transmission to humans occurs through direct or indirect contact with rodent urine via small skin lesions or mucosal surfaces. The clinical picture ranges from flu-like general symptoms to aseptic meningitis and sepsis. Vaccination is not available.
Prevention: Wear waterproof protective clothing/boots when wading through water! Cuts or scratches should be covered with waterproof bandages. Vaccination is not available for travelers.
As of 3 October, 130 locally acquired dengue cases have been reported by the Italian National Public Health Authority. These are 63 more cases than reported in the previous week's update. The newly reported cases were from Marche (51 cases), Emilia Romagna (14 cases) and Lombardy (one case). According to local authorities in the Marche Region, there is a decreasing trend in case numbers reported from Fano.
For 129 cases NUTS2 regions were reported:
An additional case (onset of symptoms 18 August, DENV 2) was reported by the Abruzzo region. However, the place of infection is currently under investigation as the infection may have occurred in another region.
Prevention: Optimal mosquito bite protection during the day, also in cities.
In case of fever, apply paracetamol products and hydration. If you have a fever, avoid taking medications containing acetylsalicylic acid (e.g., Aspirin®), as this can increase the risk of bleeding during a dengue infection. However, do not stop taking medications containing acetylsalicylic acid if it is already part of your regular treatment for an underlying condition.
Note on vaccination against dengue fever with Qdenga®:
The Swiss Expert Committee for Travel Medicine (ECTM) recommends a vaccination with Qdenga® only for travelers from 6 years old who have evidence of previous dengue infection and who will be exposed in a region with significant dengue transmission. For details, see ECTM Statement.
In 2024 and as of 2 October 2024, 18 countries in Europe have reported 1’202 locally acquired human cases of West Nile Virus (WNV) infection with known place of infection. The earliest and latest date of onset were respectively on 1 March 2024 and 26 September 2024.
Locally acquired cases were reported by Italy (422), Greece (202), Spain (114), Albania (102), Hungary (101), Romania (71), Serbia (53), Austria (34), Türkiye (30), France (27), Croatia (20), Germany (8), Slovenia (5), Kosovo (4), Slovakia (4), Bulgaria (2), North Macedonia (2) and Czechia (1).
In Europe, 88 deaths were reported by Greece (31), Italy (16), Albania (13), Romania (10), Spain (10), Bulgaria (2), Serbia (2), Türkiye (2), France (1) and North Macedonia (1).
Case numbers reported this year are above the mean monthly case count for the past 10 years. During the same period in 2023, 681 cases had been reported. However, numbers are lower than in 2018, when 1 728 cases had been reported by this time of year.
Distribution of locally acquired human West Nile virus infections in 2024 till 2 October 2024:
Of note, further regions of infection were reported in 2023.
The following precautions are recommended:
On 2 October 2024, Germany reported that two travellers returning from Rwanda were isolated at the University Medical Center Hamburg (UKE) on suspicion of Marburg virus disease (MVD). Both tested negative on 3 October. One of the cases is a medical student who worked in a hospital in Rwanda, where he was exposed to a patient infected with MVD around 25 September, while wearing appropriate protective equipment. He will continue to be monitored for his own safety until the end of the incubation period of up to 21 days. In the coming days, he is to remain in quarantine at the UKE's special unit for highly contagious infectious diseases, followed by home quarantine under the supervision of the responsible public health department.
The companion also tested negative and is showing mild symptoms of another disease. The companion had no contact with MVD-infected persons in Rwanda. The accompanying person will also continue to be monitored at the UKE over the weekend.
See news above.
The negative test result and the absence of symptoms during the returning trip rule out any risk to third parties. Thus, there was no risk of infection with the Marburg virus for either the air or rail travellers at any time.
On 27 September 2024, the Rwanda Ministry of Health announced the confirmation of Marburg virus disease in patients in health facilities in the country. As of 3 October, 36 cases of MVD have been reported, including 11 deaths (Case fatality rate: 31%). The cases are reported from seven of the 30 districts in the country (Gasabo, Gatsibo, Kamonyi, Kicukiro, Nyagatare, Nyarugenge and Rubavu districts). Among the confirmed cases, over 70% are health care workers from two health facilities in Kigali. Contact tracing is underway with 410 contacts under follow-up. The source of the infection is still under investigation.
One contact travelled to Belgium from Rwanda. WHO was made aware of this by the public health authorities in Belgium. They shared detailed information on the contact's situation, that they remained healthy, completed the 21-day monitoring period, did not present with any symptoms, and are not a risk to public health.
This is the first time MVD has been reported in Rwanda. The Government of Rwanda is coordinating the response with support from WHO and partners. The Ministry of Health of Rwanda announced several control measures including a ban on patient visits to hospitals, strengthening protocols in hospitals, and measures to limit contact with dead bodies.
Rwanda will start cinical trials of experimental vaccines and treatments for MVD in the next few weeks.
Marburg virus disease (MVD) is a rare but severe hemorrhagic fever, caused by Marburg virus (MARV). Although MVD is uncommon, MARV has the potential to cause outbreaks with significant case fatality rates (up to 88%). All recorded MVD outbreaks have originated in Africa.
Transmission: Fruit bats are the natural reservoir of MARV. The majority of MVD outbreaks have been connected to human entry into bat-infested mines and caves. Human can also get infected by direct contact with an infected animal (e.g., non-human primate).
Person-to-person transmission occur by direct contact (through broken skin or mucous membranes) with infected blood, secretions, and body fluids or by indirect contact with contaminated surfaces and materials like clothing, bedding and medical equipment MVD is not an airborne disease, and a person is not contagious before symptoms appear. As a result, if proper infection prevention and control precautions are strictly followed, the risk of infection is regarded as minimal.
Incubation period: usually five to ten days (range 2-21 days)
Symptoms: The onset of MVD is usually abrupt, with non-specific, flu-like symptoms such as a high fever, severe headache, chills and malaise. Rapid worsening occurs within 2–5 days for more than half of patients, marked by gastrointestinal symptoms such as anorexia, abdominal discomfort, severe nausea, vomiting, and diarrhea. In severe cases, a rash may develop, along with bleeding from various body areas.
Treatment: There are several experimental drugs and vaccines for Marburg, but none has been licensed to date.
Further information, see ECDC Factsheet Marburg Virus. CDC.
WHO assesses the risk of this outbreak as very high at the national level, high at the regional level, and low at the global level.
Follow media and official reports. The risk for travellers is usually very low, but it is high for family members and caregivers who have contact with sick people.
Preventive measures:
Upon return from Rwanda:
In case of symptoms
If you develop fever and nonspecific symptoms such as chills, headache, muscle pain or abdominal pain:
For clinicians:
Further information on evaluation and diagnosis: see LINK.
According to WHO, between 29 to 1 September 2024 (week 31 to 35), 19 countries shared their meningitis epidemiological data.
Epidemic:
Alert:
For previous epidemics and alerts, see EpiNews or news at www.healthytravel.ch.
Vaccination with a quadrivalent meningococcal conjugate vaccine (Menveo® or Nimenrix®) is recommended:
If no alert or epidemic is reported, vaccination is recommended for travel to the ‘meningitis belt’ during the dry season (typically occurring from December to June) across sub-Saharan Africa if
As of 27 September 2024, a total of 294 Zika virus cases across 40 provinces have now been reported for 2024.
More than 750 Zika cases were reported in the whole of 2023. Due to an increased number of imported Zika cases in returning travellers (n=25), particularly with exposure in the second half of 2023 (n=21), ongoing transmission of Zika virus in Thailand was assumed, leading the Swiss ECTM to issue special recommendations in February 2024 (EpiNews 2 February 2024).
Zika is endemic in Thailand. The current numbers do not indicate an increasing ongoing transmission. CDC does not classify Thailand as an area with a current outbreak (see CDC map). As a result, the Swiss Expert Committee for Travel Medicine updates its ZIKA prevention recommendations for travellers to Thailand as follows:
Optimal mosquito bite protection 24/7, also in cities (during the day against dengue, chikungunya, Zika and other viruses, at dusk and at night against malaria).
For detailed ECTM recommendations on Zika, see link. In case of fever, malaria should always be ruled out by blood test.
Die Zahl der in den USA im Jahr 2024 bisher gemeldeten Pertussis- oder Keuchhustenfälle ist nach den neuesten Daten der Centers for Disease Control and Prevention (CDC) mehr als viermal so hoch wie zum gleichen Zeitpunkt des letzten Jahres. Bis zum 14. September wurden 14’569 Pertussis-Fälle gemeldet. Dies entspricht einem Anstieg von 319 %.
Auch Australien verzeichnet einen deutlichen Anstieg der Pertussisfälle. Laut den dortigen Gesundheitsbehörden und Stand vom 21. September dieses Jahres wurde insgesamt 29’648 Fälle, die höchste Zahl seit 2011, als 38’748 Fälle gemeldet wurden, registriert.
Dies ist eine Erinnerung daran, dass eine reisemedizinische Beratung eine Gelegenheit ist, den Pertussis-Impfstatus zu überprüfen. Schweizer Empfehlungen: Nach der Grundimmunisierung gegen Keuchhusten werden Auffrischungsimpfungen bei Jugendlichen (11-15 Jahre) und Erwachsenen (25-29 Jahre) empfohlen.
Eine Auffrischungsimpfung ist auch bei jeder Schwangerschaft angezeigt. Zusätzlich sollten sich Jugendliche und Erwachsene jeden Alters gegen Keuchhusten impfen lassen, wenn beruflich oder familiär regelmässiger Kontakt mit Säuglingen unter 6 Monaten besteht und die letzte Impfung gegen Keuchhusten 10 Jahre oder länger zurückliegt.
Between epidemiological week (EW) 1 and EW 35 of 2024, 38 confirmed human cases including 19 deaths of yellow fever (YF) have been reported in 5 countries of the Americas Region: Bolivia (7 cases, including 4 with history of YF vaccination), Brazil (3 cases, including 1 case with history of YF vaccination in 2017), Colombia (8 cases, including 1 cases with history of YF vaccination), Guyana (2 cases), and Peru (18 cases). For details, see LINK.
Geographical distribution of municipalities with occurrence of yellow fever cases in humans in Bolivia, Brazil, Colombia, Guyana, and Peru, years 2022, 2023, and 2024 (as of EW 35):
Mozambican health authorities have detected measles outbreaks in 4 districts of the northern province of Cabo Delgado, and warned that the outbreaks have worsened over the past 2 months.
Neighbouring Malawi has also issued an alert after detecting measles cases.
This is a reminder that all travelers should be updated with measles vaccination.
Swiss recommendations: all persons born after 1963 who have no documented protection against the infection (antibodies or 2 documented vaccinations) should be vaccinated twice with MMR vaccine.
In the event of an epidemic in the region or contact with a measles case, vaccination is recommended from the age of 6 months.
The number for Zika cases in Pune have increased to more than 100 cases, including 5 deaths. All deaths were in elderly people with co-morbidities.
End of August 2024, the US CDC issued an alert on a Zika outbreaks in the state of Maharashtra.
There is currently an increased risk of transmission of the Zika virus in the state of Maharashtra, India. Please note that the Zika virus can also be transmitted sexually!
Prevention: Optimal mosquito protection 24/7: during the day against Zika, dengue and other arboviruses, at dusk and at night against malaria.
When travelling to areas with a Zika outbreak, as is now the case in the state of Maharashtra, India, the Swiss Expert Committee for Travel Medicine recommends using a condom/femidom during the trip and for at least 2 months after returning home to prevent possible sexual transmission of the virus.
Due to the risk of malformations in the unborn child, pregnant women are currently advised not to travel to the state of Maharashtra in India. If travelling is absolutely necessary, it is recommended that you speak to a specialist in travel medicine before departure.
Women planning to become pregnant should wait at least 2 months after their return (or that of their partner) from India before starting family planning. In the case of medically assisted reproduction, this period should be extended to at least 3 months. Please also read the Zika information sheet, especially if you are pregnant or if you or your partner are planning a pregnancy.
In 2024 and as of 4 September 2024, 15 countries in Europe have reported 715 locally acquired human cases of WNV infection. The earliest and latest date of onset were respectively on 1 March 2024 and 29 August 2024. Locally acquired cases were reported by Italy (287), Greece (138), Albania (74), Spain (54), Hungary (43), Romania (42), Serbia (27), Austria (18), France (15),
Türkiye (7), Croatia (3), Bulgaria (2), Germany (2), Kosovo (2) and North Macedonia (1).
In Europe, 51 deaths were reported by Greece (17), Albania (13), Italy (10), Spain (4), Romania (3), Bulgaria (2), France (1) and Serbia (1).
In addition, Slovenia reported three human cases of WNV infection through EpiPulse in the Pomurska and Podravska regions. These cases had not been reported through TESSy by 4 September and are therefore not included in this monthly WNV report.
Case numbers reported this year are above the mean monthly case count of the past 10 years. For instance, during the same period in 2023, 445 cases had been reported. Numbers are, however, lower than in 2018, when 1 048 cases had been reported by this time of year.
Distribution of locally acquired human West Nile virus infections in 2024 till 11 September 2024:
The following precautions are recommended:
In 2024, as of 06 October 2024, 16 countries have reported 7’524 confirmed cases (+770 new confirmed cases within 1 week), including 32 deaths. The three countries with the majority of the cases in 2024 (all clades) are Democratic Republic of the Congo (6’169), Burundi, (n = 987), and Nigeria, (n = 84).
(Note: A significant number of suspected mpox cases that are clinically compatible with mpox remain untested due to limited diagnostic capacity in some African countries and therefore never got confirmed.)
In 2024, 15 countries have reported both 31’527 suspected and laboratory tested cases (+5’160 within 1 week, all clades), including 998 suspected and confirmed deaths (+2 within 1 week).
According to WHO, in 2024 as of 29 Sept 2024 the cumulative confirmed mpox cases (+ cases since last update 29 Sep 2024) were reported in the below mentioned countries (for updates, details, suspected cases, epidemic curves, see WHO LINK):
Clade Ia and b:
Clade Ib
Clade Ia:
Clade II (a and/or b):
In addition, mpox cases have been reported in Africa in 2024 without specification of the clade:
Epicurve for Ib clade cases as 6 October 2024:
Follow local media and local health authority advice. The following prevention measures should be followed during a stay in countries where mpox is endemic/epidemic (see also Factsheet Mpox).
General precautions
Vaccination
A vaccination against mpox is available (Jynneos®, manufactured by Bavarian Nordic). The Swiss Expert for Travel Medicine recommends vaccination against mpox in following situations, as of 3 October 2024 (the recommendation will be updated regularly depending on the development of the outbreak):
1. People staying or travelling to Province Equateur and / or Eastern D.R. Congo (South/North Kivu) and / or Burundi in case of:
2. People staying outside of Province Equateur and / or Eastern D.R. Congo (South/North Kivu) and / or Burundi (worldwide) in case of:
At the present time, it is assumed that the available vaccine against mpox (e.g. Jynneos®) is also effective against clade I. This vaccine is considered safe and highly effective in preventing severe mpox disease.
In case of symptoms
If you are diagnosed with mpox:
For clinicians:
Avoid bathing, washing, or walking in fresh water.
Consult a general practitioner or a specialist in travel and tropical medicine after suspected skin contact with fresh water during your trip.
The Los Angeles County Public Health Department has confirmed a case of locally acquired dengue from a resident who has no history of travel to areas where dengue fever is endemic. According to a release from the health department, the infected person resides in Baldwin Park.
It is the third case of locally acquired dengue in California and the first reported by the Los Angeles County Department of Public Health. Cases of locally acquired dengue were previously confirmed by Long Beach and Pasadena in fall 2023.
Prevention: Optimal mosquito bite protection 24/7, also in cities (during the day against dengue).
In case of fever, apply paracetamol products and hydration. If you have a fever, avoid taking medications containing acetylsalicylic acid (e.g., Aspirin®), as this can increase the risk of bleeding during a dengue infection. However, do not stop taking medications containing acetylsalicylic acid if it is already part of your regular treatment for an underlying condition.
Note on vaccination against dengue fever with Qdenga®:
The Swiss Expert Committee for Travel Medicine (ECTM) recommends a vaccination with Qdenga® only for travelers from 6 years old who have evidence of previous dengue infection and who will be exposed in a region with significant dengue transmission. For details, see ECTM Statement.
Prevention: Optimal mosquito bite protection 24/7, also in cities (during the day against dengue).
In case of fever, apply paracetamol products and hydration. If you have a fever, avoid taking medications containing acetylsalicylic acid (e.g., Aspirin®), as this can increase the risk of bleeding during a dengue infection. However, do not stop taking medications containing acetylsalicylic acid if it is already part of your regular treatment for an underlying condition.
Note on vaccination against dengue fever with Qdenga®:
The Swiss Expert Committee for Travel Medicine (ECTM) recommends a vaccination with Qdenga® only for travelers from 6 years old who have evidence of previous dengue infection and who will be exposed in a region with significant dengue transmission. For details, see ECTM Statement.
In 2024, as of 01 September 2024, 15 countries have reported 3’891 confirmed cases, including 32 deaths. The three countries with the majority of the cases in 2024 are The Democratic Republic of the Congo, (n = 3’361), Burundi, (n = 328), and Nigeria (n = 48).
Note: a significant number of suspected cases, that are clinically compatible with mpox are not tested due to limited diagnostic capacity and never get confirmed. WHO efforts on integrating these data is currently ongoing and will be included in future updates. Not all countries have robust surveillance systems for mpox, so case counts are likely to be underestimates.
According to WHO, in 2024 as of 1 Sept 2024, mpox due to monkeypox virus clade I were reported in (for updates, details, epidemic curves, see WHO LINK):
Clade Ia and b:
According to Africa CDC, update 31 Aug 2024: Since the last update (23 August 2024 ), the MoH reported 1’838 confirmed, 1’095 suspected and 35 deaths (CFR: 2.2%) of mpox from 16 provinces. This is a 137% increase in the number of new cases reported compared to the last update. Cumulatively, 4’799 confirmed, 17’801 suspected and 610 deaths (CFR: 3.4%) of mpox have been reported from all 26 provinces in DRC. Children <15 years accounted for 66% of cases and 82% of deaths. Of the confirmed cases, 73% were males. Clade Ia and Ib was isolated from the confirmed cases.
Clade Ib
Clade Ia:
Mpox due to monkeypox virus clade II (a and b) reported in 2024 (for updates, details, epidemic curves, see WHO LINK):
In addition, mpox cases have been reported in Africa without specification of the clade in 2024:
Clades globally detected (1 Jan 2022 to 01 Sept 2024), Link Outbreak status (active transmission = red), Link
WHO conducted the latest global mpox risk assessment in August 2024. Based on the available information, the risk was assessed as:
WHO risk assesment, see LINK.
Follow local media and local health authority advice. The following prevention measures should be followed during a stay in countries where mpox is endemic/epidemic (see also Factsheet mpox).
General precautions
Vaccination
A vaccination against mpox is available (Jynneos®, manufactured by Bavarian Nordic). The Swiss Expert for Travel Medicine recommends vaccination against mpox in following situations, status 30 August 2024 (the recommendation will be updated regularly depending on the development of the outbreak):
1. People staying or travelling to Eastern D.R. Congo and Burundi in case of:
(of note: broader indication is under discussion)
2. People staying outside of Eastern D.R. Congo and Burundi (worldwide) in case of
At the present time, it is assumed that the available vaccine against mpox (e.g. Jynneos®) is also effective against the new clade I. This vaccine is considered safe and highly effective in preventing severe mpox disease.
In case of symptoms
If you are diagnosed with mpox:
For clinicians:
In two weeks (19 – 21 Sep 2024) the "Conference on Tropical Medicine and Global Health 2024" starts in Düsseldorf!
We would like to draw your attention once again to the exciting and varied programme with numerous national and international speakers (see www.dtg-conferences.de)!
The hosting societies German Society for Tropical Medicine, Travel Medicine and Global Health e.V. (DTG) and Swiss Society of Tropical and Travel Medicine (SSTTM) are delighted to welcome you to the conference!
Please note:
The State Department of Health confirmed a case rabies in a 56-year-old man who was bitten by a marmoset in the rural area of Piripiri, 166 km north of Teresina. The agency reported that the last cases of human rabies in the state occurred more than 10 years ago, in 2013, in the cities of Parnaíba and Pio IX.
In Brazil, rabies transmitted by the common marmoset primate is emerging and causing unpredictable human deaths. This primate, once endemic to the northeast of the country, has now invaded regions in the south through human-mediated introductions. However, the dynamics of rabies in this primate and the extent of spillover risk to humans remain unknown. Researchers found that outbreaks of rabies in marmosets reported to the Ministry of Health are continuously reported in new areas, including three new states since 2012, for details see publication.
Marmoset:
Prevention: Avoid contact with animals and do not feed them! Pre-exposure vaccination is particularly recommended for travelers with increased individual risk (working with animals, travel on two-wheelers, to remote areas, young children, cave explorers, possible contact with bats, etc.).
Behavior after exposure: After an animal bite/scratch: immediately wash the wound with water and soap for 15 minutes, then disinfect and in any case visit a medical center for post-exposure vaccination as soon as possible! For more information: see Flyer rabies.
Between early June and 15 August 2024, the Ministry of Health and Family Welfare of the Government of India reported 245 cases of acute encephalitis syndrome (AES) including 82 deaths (CFR 33%). Of these, 64 are confirmed cases of Chandipura virus (CHPV) infection. CHPV is endemic in India, with previous outbreaks occurring regularly, especially during the monsoon season. However, the current outbreak is the largest in the past 20 years.
The Chandipura virus (Vesiculovirus chandipura, CHPV) is a zoonotic arbovirus in the family Rhabdoviridae. The virus is endemic in several regions of India and has been detected in other countries in the South Asian subcontinent. Sporadic cases and limited outbreaks have been reported in India since 1965. The virus has also been detected in animals in some African countries (e.g. Nigeria, Senegal, Tanzania) without reported human cases.
The principal vector of CHPV in India is the sand fly Phlebotomus papatasi, which is also present in several regions of Europe. Other sand fly, mosquito and tick species are also potential vectors of the virus. A broad range of animals are suspected as vertebrate hosts of CHPV; however, little information is available on the natural ecological cycle of the virus.
The incubation period is typically short, ranging from 3 to 6 days.
CHPV infection may manifest in rapid course as a general febrile disease with meningitis and/or encephalitis (Acute Encephalitis Syndrome). Predominantly children below the age of 15 years are affected. The case fatality rate can reach 55–75%. Serological data indicate asymptomatic human infections.
There is no specific treatment or vaccine available.
WHO assessed the risk as moderate at the national level. The risk assessment will be reviewed as the situation of the outbreak evolves.
Prevention: Optimal insect bite protection 7/24 is of great importance. In case of symptoms: see medical advice immediately.
Sexually transmissible infections (STIs) represent some of the most prevalent infections globally, with an estimated 375 million new infections with one of the curable STIs each year. About 300’000 new diagnoses of bacterial STIs are reported annually by the European Union (EU)/European Economic Area (EEA) Member States to The European Surveillance System, the main source of epidemiological data for the region.
On World Sexual Health Day (4 September 2024), the European Centre for Disease Prevention and Control (ECDC) published a comprehensive review that underscores the urgent need to improve monitoring data and enhance targeted prevention interventions across Europe, see LINK
Swiss recommendations: all persons born after 1963 who have no documented protection against the infection (antibodies or 2 documented vaccinations) should be vaccinated twice with MMR vaccine.
In the event of an epidemic in the region or contact with a measles case, vaccination is recommended from the age of 6 months.
At least 6 people have died and more have been hospitalized in intensive care unit due to methanol intoxication after consumption of punched alcohol.
According to the police in Bangkok, samples of homemade liquor from the 18 stalls contained hazardous levels of methanol.
Two suspected Nipah cases have been reported from the state of Kerala. The case are hospitalized and isolated. Investigations are ongoing.
The Nipah virus (NiV) is a viral disease that can cause a severe clinical picture. It was first detected in 1999 during an outbreak in Malaysia and Singapore. Since then, several outbreaks have been reported in South and Southeast Asia.
NiV is most commonly transmitted via fruit bats through direct or indirect contact with their faeces. Tree fruit or sap made from it that is contaminated with bat faeces is often considered a source of infection. Human-to-human transmission has been reported when caring for infected patients. In addition, pigs can also be infected. The disease spectrum ranges from (mostly) asymptomatic courses to flu-like symptoms with high fever, headache and muscle pain to encephalitis with severe neurological or other complications. Mortality is high (40-70%).
The oropouche virus outbreak in Cuba is still ongoing and the detection of cases in returning travelers continuous.
The U.S. Centers for Disease Control and Prevention (CDC) reported on 27 Aug 2024 the detection of 21 cases of oropouche fever in people who returned from Cuba, 3 of whom required hospitalization. These cases were recorded up to 16 Aug 2024, and most of those affected presented symptoms between May and July 2024.
Canary islands: In August three cases of oropouche virus infection have been confirmed on Canary islands among travelers returning from Cuba.
According to WHO, as of 20 July 2024, a total of 8’078 confirmed oropouche cases, including two deaths, have been reported in the Region of the Americas, across five countries: Bolivia, Brazil, Colombia, Cuba, and Peru.
Oropouche fever is a viral disease that is transmitted by mosquito bites. The virus is found in several regions of the Americas, particularly in Brazil, Colombia, Cuba, Ecuador, French Guiana, Panama, Peru and Trinidad and Tobago.
The clinical picture includes dengue-like symptoms with sudden onset of high fever, headache, myalgia, skin rash, joint pain and vomiting. The disease usually lasts 3-6 days. A short-term recurrence of symptoms can occur in up to 60% of cases. Rare complications include inflammation of the brain. In 2024, a small number of cases of transmission from mother to unborn child (vertical transmission) were reported for the first time.
Prevention: Optimal mosquito protection 24/7 (also against other mosquito-borne diseases such as dengue, Zika, Chikungunyaand malaria).
Given its clinical presentation, Oropouche fever should be included in the clinical differential diagnosis for other common vector-borne diseases in the region of the Americas (e.g., malaria, dengue, chikungunya, Zika, yellow fever.
The occurrence of vertical transmission of OROV adds a new dimension to the pathogenicity of the virus. The extent of possible foetal malformations or death in the context of an OROV outbreak situation is currently still unclear and is being investigated. Until further data is available, pregnant women and women planning to be pregnant should be provided with comprehensive information during pre-travel consultation on the OROV outbreak and the potential of miscarriage, fetal malformation or death. The current outbreaks occur in regions where Zika virus is also endemic, and travel advice for pregnant women related to ZIKV can also adequately address the potential risk associated with Oropouche virus disease; for detailed ECTM recommendations on Zika prevention, see LINK.
Epidemiological situation: Mpox outbreaks are caused by different clades, clades 1 and 2, see EpiNews as of 16 August 2024. Historically, clade 1 has been associated with a higher percentage of people with mpox developing severe illness or dying, compared to clade 2 (responsible for the global spread in 2022). D.R. Congo (DRC) has been the most affected country, with a large increase of mpox cases due to MPXV clade I being reported since November 2023. In April 2024, sequencing of mpox cases from Kamituga in South Kivu province in eastern DRC, within the context of an observational study, identified a subtype of clade I, clade Ib. Both MPXV clade Ia and clade Ib have been circulating in DRC, while clade Ia has been detected in Congo and Central African Republic.
Geographical spread of the new MPXV clade Ib variant occurs via transport routes through sexual contact (e.g. sex workers), and then local transmission is observed in households and other settings (which are becoming increasingly important).
In recent weeks, confirmed mpox cases due to MPXV clade Ib have been reported by countries neighbouring DRC, such as:
On 14 August 2024, WHO declared the current clade I monkeypox virus outbreak a public health emergency of international concern (PHEIC).
The type of exposure reported by cases in DRC includes sexual contact, non-sexual direct contact, household contact and healthcare facility contacts. The cases reported in Rwanda had travel history to DRC and Burundi, investigation showed that the cases reported by Uganda took place outside the country, while the case reported in Kenya was detected at a point of entry. For clade Ib (reported in Eastern DRC, Burundi, Rwanda, Uganda and Kenya), close physical contact (sexual contact) has been documented as the predominant mode of transmission, while for clade Ia (in endemic areas of DRC, Congo and CAR) multiple modes of transmission have been documented including zoonotic transmission.
For details of the cases, epidemiology, public health response and WHO advice, see WHO LINK.
Follow local media and local health authority advice. The following prevention measures should be followed during a stay in countries where mpox is endemic/epidemic:
General precautions:
A vaccination against mpox is available (Jynneos®, manufacture Bavarian Nordic). There is an increased demand worldwide with risk of vaccine shortage. The Swiss Expert for Travel Medicine recommends vaccination against mpox in following situations, status 30 August 2024 (the recommendation will be updated regularly depending on the development of the outbreak):
People staying or travelling to Eastern D.R. Congo and Burundi in case of:
People staying outside of Eastern D.R. Congo and Burundi (worldwide) in case of
At the present time, it is assumed that the available vaccine (Jynneos®) is also effective against the new clade I. This vaccine is considered safe and highly effective in preventing severe mpox disease.
In case of symptoms:
If you are diagnosed with mpox:
For clinicians:
According to the media, the Nigerian government has mandated that incoming passengers to the country (through the airports), fill out a health declaration form to ensure safety against infectious diseases.
The reintroduction of the protocols by the Nigerian government through the Port Health Services under the Federal Ministry of Health and Social Welfare is connected to the recent outbreak of mpox (former ‘monkeypox’) in the Democratic Republic of Congo (DRC) and other African countries.
WHO Director-General Dr Tedros has determined that the upsurge of mpox (formerly monkeypox) in the Democratic Republic of the Congo (DRC) and a growing number of countries in Africa constitutes a public health emergency of international concern (PHEIC) under the International Health Regulations (2005) (IHR). The PHEIC will help to take further coordinated international action to support countries in combating disease outbreaks.
This PHEIC determination is the second in two years relating to mpox. Mpox was first detected in humans in 1970, in the DRC. The viral disease is caused by the Monkeypox virus (MPXV), which is present in the wildlife (in certain small mammals) and the disease is considered endemic in countries in central and west Africa. In July 2022, the multi-country outbreak of mpox was declared a PHEIC after an outbreak occurred in Europe and spread rapidly via sexual contact across a range of countries where the virus had not been seen before. That PHEIC was declared over in May 2023 after there had been a sustained decline in global cases.
Since November 2023, the Democratic Republic of the Congo (DRC) has seen a significant increase in mpox cases and the emergence of a new mpox clade I. The country has reported over 16’000 new cases and more than 500 deaths in 2024. Mpox outbreaks are caused by different clades, clades 1 and 2. Historically, clade 1 has been associated with a higher percentage of people with mpox developing severe illness or dying, compared to clade 2. The clades are now subdivided into clade 1a, 1b and clade 2a, 2b.
Details to Mpox, see LINKs of Swiss FOPH, Robert Koch-Institute Germany, ECDC, CDC.
Countries where mpox virus clade I and/or clade II have been detected:
Follow local media and local health authority advice.
The following prevention measures should be followed during a stay in countries where mpox is endemic/epidemic:
General precautions:
A vaccination against mpox is available (Jynneos®, manufacture Bavarian Nordic). There is an increased demand worldwide with risk of vaccine shortage. The Swiss Expert for Travel Medicine recommends vaccination against mpox in following situations, status 16 August 2024 (the recommendation will be updated regularly depending on the development of the outbreak):
1. People staying or travelling to Eastern D.R. Congo and Burundi in case of:
2. People staying outside of Eastern D.R. Congo and Burundi (worldwide) in case of:
At the present time, it is assumed that the available vaccine (Jynneos®) is also effective against the new clade I. This vaccine is considered safe and highly effective in preventing severe Mpox disease.
In case of symptoms:
For clinicians:
The European Center for Disease Control (ECDC) has issued a risk assessment on 16 August 2024 with specific advice, for details see LINK.
Following the massive flooding at the end of July, the number of leptospirosis cases is rising at an alarming rates.
The Philippine Department of Health on Saturday ordered all hospitals in the capital to ‘activate’ their leptospirosis capacity plan.
On 8 August 2024, three additional autochthonous cases of dengue have been reported in the Pyrénées, Orientales, Lozère and Gard departments.
On 2 August 2024, an autochthonous case of dengue in a person living in La Colle-sur-Loup, Alpes-Maritimes department, Provence-Alpes-Côte d'Azur region. This is the first locally acquired dengue case in the region in 2024. Recently, a second case was reported from the same region.
Overall, France has reported six locally acquired dengue cases in 2024.
Prevention: Optimal mosquito bite protection 24/7, also in cities (during the day against dengue).
In case of fever, apply paracetamol products and hydration. If you have a fever, avoid taking medications containing acetylsalicylic acid (e.g., Aspirin®), as this can increase the risk of bleeding during a dengue infection. However, do not stop taking medications containing acetylsalicylic acid if it is already part of your regular treatment for an underlying condition.
Note on vaccination against dengue fever with Qdenga®:
At the end of July 2024, Swissmedic authorised the Qdenga vaccine from manufacturer Takeda Pharma AG. The vaccine is licensed for people aged four and over.
The Swiss Expert Committee for Travel Medicine (ECTM) assessed the published and unpublished data for the Qdenga® vaccine. In line with the recommendation of WHO and other European countries, the Swiss ECTM issues the following recommendation:
Previous dengue infection is defined as i) a laboratory confirmed dengue infection (PCR, antigen or seroconversion) or ii) a compatible history of dengue infection with a positive IgG serological test.
This is a precautionary decision, since the current data also include the possibility that people who are vaccinated with Qdenga® before a first dengue infection may experience a more severe course of the disease when infected after vaccination. A consultation with a specialist in tropical and travel medicine is recommended.
Travel medicine advisors should provide concise communication in accessible language on the complexity and risk/benefit evaluation for the use of dengue vaccines in travellers.
The full ECTM statement including background information is available at LINK.
Information on Dengue, including Factsheets: Vaccinations – HealthyTravel.
Swissmedic, 2.8.2024 | WHO 3.5.2024 position paper on dengue vaccine
Vaccination against Dengue fever for Travellers – Statement of the Swiss Expert Committee for Travel Medicine, an organ of the Swiss Society for Tropical and Travel Medicine, August 2024, LINK.
Information about rabies and what to do if exposed is important for all travelers.
Prevention: Avoid contact with animals! Do not feed animals either! Pre-exposure vaccination is particularly recommended for travelers with increased individual risk (working with animals, travel on two-wheelers, to remote areas, young children, cave explorers, possible contact with bats, etc.).
Behavior after exposure: After an animal bite/scratch: immediately wash the wound with water and soap for 15 minutes, then disinfect and in any case visit a medical center for post-exposure vaccination as soon as possible! For more information: see factsheet Rabies.
In June and July 2024, 19 imported cases of Oropouche virus (OROV) disease were reported for the first time in EU countries: Spain (12), Italy (5), and Germany (2), eighteen of the cases had a travel history to Cuba and one to Brazil.
The principal vector of OROV (Culicoides paraensis midge) is widely distributed across the Americas, but absent in Europe. To date, there has been a lack of evidence as to whether European midges or mosquitoes could transmit the virus. To date, no secondary transmission has ever been reported. Therefore, the risk of locally acquired OROV disease in the EU/EEA is low.
According to ECDC, the likelihood of infection for travellers to, or residing in epidemic areas in South and Central America is currently assessed as moderate. Further imported cases to Europe are likely.
Prevention: Optimal mosquito protection 24/7 (also against other mosquito-borne diseases such as dengue, Zika, Chikungunya and malaria).
Given its clinical presentation, Oropouche fever should be included in the clinical differential diagnosis for other common vector-borne diseases in the region of the Americas (e.g., malaria, dengue, chikungunya, Zika, yellow fever.
The occurrence of vertical transmission of OROV adds a new dimension to the pathogenicity of the virus. The extent of possible foetal malformations or death in the context of an OROV outbreak situation is currently still unclear and is being investigated. Until further data is available, Pregnant women and women planning to be pregnant should be provided with comprehensive information during pre-travel consultation on the OROV outbreak and the potential of miscarriage, fetal malformation or death. The current outbreaks occur in regions where Zika virus is also endemic, and travel advice for pregnant women related to ZIKV can also adequately address the potential risk associated with Oropouche virus disease; for detailed ECTM recommendations on Zika prevention, see LINK.
Due to heavy rainfalls and flooding, the risk for leptospirosis may be increased.
Wear waterproof protective clothing/boots when wading through water! Cuts or scratches should be covered with waterproof bandages. Vaccination for travelers is not available.
On 31 July 2024, France reported a confirmed, autochthonous case of chikungunya virus (CHIKV) disease in Île-de-France with suspected exposure in Paris (Paris Department) and Gennevilliers (Hauts-de-Seine Department). The case had the onset of symptoms on 18 July 2024. Since 1 May and as of 30 July 2024, nine imported chikungunya cases have been reported in France.
On 2 August 2024, the Alpes-Maritimes department reported its first locally acquired case of dengue in France for the 2024 season.
The health authorities are warning against the consumption of buffer fish products that have reached the markets. The buffer fish has migrated from the Indian Ocean via the Red Sea and the Suez Canal into the waters of the Mediterranean and is an invasive species. It can grow to more than one metre in length. It has been found in coastal waters from Turkey, Syria, Cyprus and Egypt to Gibraltar. The takifugu (fugu) or pufferfish can contain the toxin tetrodotoxin, which it absorbs and accumulates in the food chain via toxic microorganisms. The toxin is heat-resistant and odourless.
Tetrodotoxin is an extremely strong toxin that is mainly found in the liver and gonads of some fish such as pufferfish, hogfish and toadfish as well as in some amphibian, octopus and shellfish species. Poisoning in humans occurs when the muscle meat of fish is improperly prepared and consumed. Tetrodotoxin interferes with the transmission of signals from the nerves to the muscles and causes progressive muscle paralysis. The symptoms can lead to paralysis, unconsciousness, respiratory arrest and death within a few hours of consumption. There is no antidote.
Prevention: Optimal mosquito bite protection 24/7, also in cities (during the day against dengue).
In case of fever, apply paracetamol products and hydration. If you have a fever, avoid taking medications containing acetylsalicylic acid (e.g., Aspirin®), as this can increase the risk of bleeding during a dengue infection. However, do not stop taking medications containing acetylsalicylic acid if it is already part of your regular treatment for an underlying condition.
Note on vaccination against dengue fever with Qdenga®:
General precautions:
Recommended vaccinations and other health risks:
Diseases transmitted by mosquitoes and ticks:
Prevention: Optimal mosquito bite protection 24/7, also in cities (during the day against dengue).
In case of fever, apply paracetamol products and hydration. If you have a fever, avoid taking medications containing acetylsalicylic acid (e.g., Aspirin®), as this can increase the risk of bleeding during a dengue infection. However, do not stop taking medications containing acetylsalicylic acid if it is already part of your regular treatment for an underlying condition.
Note on vaccination against dengue fever with Qdenga®:
Performing the rituals of Hajj and Umrah is strenuous and often involves long walks in hot weather. Pilgrims must ensure that they are as physically fit as possible.
Ideally, pilgrims should see their doctor at least four to six weeks before the Hajj for advice on vaccinations, food and water precautions, risks from insect bites, heat exhaustion and how to avoid injury.
Pilgrims with pre-existing medical conditions should discuss with their doctor whether traveling is an option. If they are taking medication, they should ensure that they have a sufficient supply for the time abroad and that they have a copy of their prescription with them.
The following vaccinations are recommended or mandatory (see the website of the Ministry of Health of the Kingdom of Saudi Arabia for details).
Recommended precautions:
According to the WHO, 18 countries shared their epidemiological data on meningitis between March 4 and 10, 2024.
Epidemics:
Warnings:
Previous epidemics and warnings can be found under News at www.healthytravel.ch.
Seasonal meningitis epidemics occur in sub-Saharan Africa mainly during the dry season, usually from December to June. They decline rapidly with the onset of the rains. In general, the meningococcal serogroups A, C, W and X are responsible for these outbreaks. The disease spreads from person to person by droplets. If symptoms (high fever, severe headache and vomiting) occur, a doctor should be consulted immediately and antibiotic therapy started, as the disease can lead to life-threatening conditions within hours. Vaccination against the most important strains of meningitis is available as prophylaxis for adults and children over 1 year of age.
According to the WHO, 18 countries submitted their epidemiological data on meningitis between February 18 and March 3, 2024 (week 7 to 9).
Epidemics:
Warnings:
Further information:
Previous epidemics and warnings can be found under News on www.healthytravel.ch
Seasonal meningitis epidemics in sub-Saharan Africa occur mainly during the dry season, usually from December to June. They decline rapidly with the onset of the rains. In general, the meningococcal serogroups A, C, W and X are responsible for these outbreaks. The disease spreads from person to person by droplets. If symptoms (high fever, severe headache and vomiting) occur, a doctor should be consulted immediately and antibiotic therapy started, as the disease can lead to life-threatening conditions within hours. Vaccination against the most important strains of meningitis is available as a prophylaxis for adults and children over 1 year of age.
The number of dengue patients in Thailand has reached 17,783 cases so far in 2024, more than twice as many as in the corresponding period in 2023.
Optimal protection against mosquito bites around the clock, even in cities (during the day against dengue, chikungunya, Zika). In case of fever: paracetamol products and hydration. Avoid taking medication containing acetylsalicylic acid (e.g. Aspirin®) if you have a fever, as this can increase the risk of bleeding during a dengue infection. However, do not stop taking medicines containing acetylsalicylic acid if they are already part of your regular treatment for an underlying condition.
Based on the available data, many European countries and the Swiss Expert Committee for Travel Medicine (EKRM) currently recommend vaccination with Qdenga® only for certain travelers and in special situations. Advice from a specialist in tropical and travel medicine is therefore recommended.
Dengue fever, endemic in many tropical and subtropical countries, is a major cause of illness in travelers, but severe dengue fever and resulting hospitalizations or deaths are rare in this population. There are two vaccines against dengue fever, Dengvaxia® and Qdenga®. While there is no recommendation for Dengvaxia® for use in travelers, Qdenga® has been approved for travelers in many European countries since December 2022. Swissmedic's approval for use in Switzerland is expected in the second half of 2024.
The Swiss Expert Committee for Travel Medicine (EKRM) has evaluated the published and unpublished data on the Qdenga® vaccine and makes the following recommendation:
Travel health advisors should provide information in plain language about the complexities and risk-benefit trade-offs of using dengue vaccines in travelers.
Details of the position statement can be found at LINK.
According to the WHO, 18 countries submitted their epidemiological data on meningitis between January 29 and February 18, 2024 (week 5 to 7).
Epidemics:
Warnings:
Previous epidemics and warnings can be found under News at www.healthytravel.ch
Seasonal meningitis epidemics occur in sub-Saharan Africa mainly during the dry season, usually from December to June. They decline rapidly with the onset of the rains. In general, the meningococcal serogroups A, C, W and X are responsible for these outbreaks. The disease spreads from person to person by droplets. If symptoms (high fever, severe headache and vomiting) occur, a doctor should be consulted immediately and antibiotic therapy started, as the disease can lead to life-threatening conditions within hours. Vaccination against the most important strains of meningitis is available as prophylaxis for adults and children over 1 year of age.
Between January 22 and 28, 2024 (week 4), 18 countries reported their meningitis epidemiological data.
Epidemics:
Warnings:
Previous epidemics and warnings can be found at www.healthytravel.ch.
Seasonal meningitis epidemics occur in sub-Saharan Africa mainly during the dry season, usually from December to June. They decline rapidly with the onset of the rains. In general, the meningococcal serogroups A, C, W and X are responsible for these outbreaks. The disease spreads from person to person by droplets. If symptoms (high fever, severe headache and vomiting) occur, a doctor should be consulted immediately and antibiotic therapy started, as the disease can lead to life-threatening conditions within hours. Vaccination against the most important meningitis strains is available as prophylaxis for adults and children over 1 year of age.
According to Médecins Sans Frontières (MSF), 3,965 patients were treated for measles in Borno State in Nigeria from October to December 2023. The increase in the number of cases could be due to the fact that public health actors were unable to achieve the 95% vaccination rate due to the uncertain situation in the region. In addition, the interruption of routine childhood vaccinations during the COVID-19 pandemic contributed to the increase in cases.
On February 12, 2024, the Centres for Disease Control and Prevention (CDC) published the top 10 countries with measles outbreaks (data refer to the period July - December 2023):
Measles outbreaks are reported when the number of reported cases in an area is higher than the expected number of cases.
In the 2nd and 3rd week of 2024, 21 countries have reported their epidemiological data on meningitis:
Epidemic:
Warning:
Previous epidemics and warnings can be found at EpiNews or at www.healthytravel.ch.
Seasonal meningitis epidemics occur in sub-Saharan Africa mainly during the dry season, usually from December to June. They decline rapidly with the onset of rainfall. In general, the meningococcal serogroups A, C, W and X are responsible for these outbreaks. The disease spreads from person to person by droplets. If symptoms (high fever, severe headache and vomiting) occur, a doctor should be consulted immediately and antibiotic therapy started, as the disease can lead to life-threatening conditions within hours. Vaccination against the most important meningitis strains is available as prophylaxis for adults and children over 1 year of age.
In 2023, 171 cases of leptospirosis were recorded in Reunion Island, more than 70% of which occurred between January and June.
Leptospirosis is a bacterial disease that occurs worldwide, particularly frequently in tropical countries during the rainy or flooding season. It is transmitted through contact between small skin lesions and water contaminated with urine (mainly from infected rats, dogs, pigs, cows, etc.). The risk of infection increases when camping or during water-related activities (swimming, kayaking, wading through watercourses). The disease can be treated with antibiotics if diagnosed in time.
The following precautions are recommended:
General:
Recommended vaccinations and other health risks: See the relevant country page at www.healthytravel.ch/countries/. Vaccination against meningococcal disease may be considered.
It is strongly recommended that you protect yourself against mosquitoes around the clock throughout the country, including in cities, to prevent diseases such as
Dengue, Chikungunya and Zika. The city of Rio de Janeiro is malaria-free, but the disease is endemic in the Atlantic rainforest of the state of Rio de Janeiro. Further malaria risk areas and
recommended prevention measures can be found on the Brazil country page www.healthytravel.ch .
Since the beginning of 2023 and up to January 11, 2024, a total of 777 Zika virus infections (ZIKV) have been reported in Thailand. These have been registered in 36 provinces, with the central and northern regions being the most affected. According to the government, 758 people tested positive (including 33 pregnant women), compared to only 190 in 2022 and 63 in 2021. It is currently unclear whether the case numbers in 2023 are due to an increase in awareness and/or diagnostic capacity or an increase in ZIKV circulation.
In December 2023, three Zika cases were imported to Europe after a stay in Thailand.
Optimal measures to prevent mosquito bites around the clock, see factsheet Protection against mosquito and tick bites.
Although the US CDC map (last updated December 8, 2023) does not yet show Thailand as a country with a current Zika outbreak, an increased risk of Zika transmission in Thailand cannot be ruled out. As soon as more data is available, the Expert Committee on Travel Medicine (ECRM) will reassess the situation.
Until further information is available, the EKRM recommends that
For details, see the Swiss ECRM recommendation from 2019: LINK
The following precautions are recommended:
General:
Recommended vaccinations and other health risks: See the respective country page at www.healthytravel.ch/countries/.
The outbreak of Streptococcus suis infections in Thailand continues: 137 infections and 8 deaths have been reported within the last three weeks. The increase in infections is linked to the consumption of raw or undercooked pork, sausages and raw pork blood salad.
Infection with Streptococcus suis is usually asymptomatic in pigs. Humans can become infected by eating contaminated raw or undercooked pork and fresh blood or through direct contact with infected pigs or pork products. Symptoms include high fever, severe headache and dizziness, vomiting, diarrhea, neck stiffness, intolerance to light, decreased level of consciousness and hearing loss.
Health authorities are warning people to protect themselves after a case of Japanese encephalitis virus (JEV) infection was detected in New South Wales (NSW). Following the persistently wet and warm weather over the vacation period, mosquito populations in NSW are currently thriving.
In 2022, there was one outbreak of JEV in Australia with 45 cases detected mainly in the Murray Valley in New South Wales.
Optimal protection against mosquito bites, especially at dusk and at night. In addition, the Swiss Expert Commission for Travel Medicine (EKMT) recommends vaccination against JE for travelers to Australia for high-risk travelers such as:
According to the Thai Ministry of Health, there has been a significant increase in Zika virus cases, with around 100 new cases are reported every month.
Around 660 cases have been registered since June 2023, mainly in the northern and central areas. Cases of Zika virus have also been detected in people who had recently returned from Thailand. Zika is endemic in Thailand and other parts of the world, but a current outbreak (epidemic) is not currently recorded in Thailand, according to the US Center of Disease Control and Prevention (CDC) (see CDC map).
Optimum protection against mosquito bites around the clock, even in cities (during the day against chikungunya, dengue, Zika and other viruses, at dusk and at night against malaria). Detailed information on Zika can be found in the Zika information sheet.
If you have a fever, take paracetamol preparations and make sure you drink enough fluids. Do not take medicines containing acetylsalicylic acid (ASA) (e.g. Aspirin®) if you have a fever, as these increase the risk of bleeding. (Note: Do not stop taking medication containing ASA if it is part of a long-term medication for an underlying illness.
In the case of fever, malaria should always be ruled out by means of a blood test.
After a three-week trip to southern Thailand (Krabi, Khao Sok, Koh Phangan, Koh Samui), two German tourists in Tübingen were diagnosed with Zikainfection.
Although the CDC does not classify Thailand as a country with a current outbreak (see CDC map), Zika is endemic in Thailand.
The WHO's annual malaria report highlights the growing threat of climate change. In 2022, there were an estimated 249 million malaria cases worldwide in 85 malaria-endemic countries and territories - significantly more than the estimated number of cases before the COVID-19 pandemic. The main countries contributing to the increase in 2022 were Pakistan, Ethiopia, Nigeria, Uganda and Papua New Guinea. The WHO African region accounted for about 94% of cases worldwide. The number of deaths amounted to an estimated 608,000. In addition to the disruption caused by COVID-19, the global malaria response is facing a growing number of threats: Drug and insecticide resistance, humanitarian crises, resource scarcity, climate change impacts and delays in program implementation, particularly in countries with a high burden of the disease.
Details can be found at WMR LINK.
In October 2023, the following countries reported meningitis outbreaks:
Epidemic:
Warning:
Seasonal meningitis epidemics occur in sub-Saharan Africa mainly during the dry season, usually from December to June. They decline rapidly with the onset of the rains. In general, the meningococcal serogroups A, C, W and X are responsible for these outbreaks. The disease spreads from person to person by droplets. If symptoms (high fever, severe headache and vomiting) occur, a doctor should be consulted immediately and antibiotic therapy started, as the disease can lead to life-threatening conditions within hours. Vaccination against the most important meningitis strains is available as prophylaxis for adults and children over 1 year of age.
Prevention: Good personal hygiene. Avoid close contact with sick people, including those with skin lesions or genital lesions. Avoid contact with sick animals. Avoid contact with contaminated materials used by sick people. Safer sex is recommended to prevent other sexually transmitted diseases. Do not eat bush meat.
Vaccination against Mpox is available and recommended for people at increased risk. Talk to your doctor about whether such a vaccination is recommended for you. Swiss recommendations: see LINK.
In case of symptoms: If you are diagnosed with Mpox, you should not have sex while you have symptoms and lesions. Use condoms for 12 weeks after infection. This is a precautionary measure to reduce the risk of transmitting the virus to a partner. Wash your hands frequently with soap and water or an alcohol-based hand sanitizer containing at least 60% alcohol.
On the World AIDS Day on December 1, here is a look back at the extent of the pandemic:
In 2022:
Since the beginning of the epidemic:
In Denmark, whooping cough (pertussis) cases have increased significantly during the spring and summer, with the authorities now reporting a figure more than ten times higher than normal. In the 37th week alone (up to September 16), 200 cases of whooping cough were detected (normally an average of around 20 cases per week).
Whooping cough is a respiratory infection that is characterized by a course lasting up to three months with severe coughing fits, often accompanied by howling breathing and vomiting immediately after the attacks.
An 8-year-old girl died of rabies in Agra, Uttar Pradesh, on October 25, 2023, after being bitten by a stray dog two weeks earlier. The child did not inform anyone in her family except her mother about the incident, and she was only given some home remedies instead of the necessary rabies vaccine. The family only contacted the Community Health Center when the girl developed symptoms after 15 days.
According to officials, as many as 5000 cases of dog bites are reported every month in both rural and urban Agra.
Ethiopia has faced malaria outbreaks in numerous regions since early 2023. The regions most affected include Gambela, Southwest Ethiopia (SWEPR), Afar, and Ahmara.
In addition to malaria, Ethiopia faces other health crises, including cholera, measles, dengue fever, and COVID-19, as well as a variety of natural disasters such as droughts, recurrent floods, food insecurity, and locust infestations, as well as man-made challenges such as conflict, internal displacement, and the effects of the Sudan conflict. These factors combined have significantly increased the country's need for health and humanitarian assistance.
The Ministry of Health documents can be downloaded at www.healthytravel.ch.
Although the Tanzania Ministry of Health document is of poor quality and was issued in 2016, travelers with this document have had no problems entering mainland Tanzania. To emphasize the timeliness of this document, the Swiss EKRM recommends that it be stamped by your travel clinic and dated and signed by you.
This tragic case demonstrates the importance of being informed about rabies and acting quickly in the event of a bite or scratch by a mammal in a rabies-endemic country.
Prevention: Avoid contact with animals! Do not feed animals either! Pre-exposure vaccination (2 injections and a booster after 1 year) is recommended especially for travelers with increased individual risk (traveling with two-wheelers, to remote areas, long-term stays, small children, cave explorers, contact with bats, etc.).
Behavior after exposure: After an animal bite/scratch: Immediately wash the wound with running water and soap for 15 minutes, then disinfect and in any case visit a good medical facility as soon as possible for follow-up vaccination!
For more information: see flyer rabies.
In the Indian state of Assam (north-eastern part of the country), 432 cases of Japanese encephalitis (JE) were reported by the end of August, 24 of which were fatal. Cases have increased almost tenfold since the beginning of August 2023.
Ranchi district in Jharkhand state in northern India has also reported an increase in JE cases, although the numbers are still modest, with 12 cases in recent weeks.
The risk for travellers is low. Optimal protection against mosquito bites, especially at dusk and at night.
The indication for vaccination against Japanese encephalitis should be discussed individually and is recommended for:
Protect yourself against ticks during outdoor activities (see Factsheet Mosquito Protection). Vaccination is recommended when staying in endemic areas. Complete basic immunisation requires three vaccination doses. Protection for a limited period of time already exists after two vaccination doses. These first two vaccinations are usually given one month apart. The third vaccination is given 5-12 months after the second dose, depending on the vaccine. A booster vaccination is indicated after 10 years.
After recreational activities: Always check your body for ticks or tick bites. If redness occurs after a tick bite: Consult a doctor to rule out Lyme disease, which would require antibiotic treatment.
According to media reports, a case of canine rabies has been reported in the city of São Paulo in Brazil. The infection was confirmed by the Pasteur Institute. This is the first case of canine rabies since 1983.
The case is still under investigation and has already led to surveillance measures in the region and 367 animals have been vaccinated with rabies vaccine.
Information about rabies and what to do in case of exposure is important for all travelers!
Prevention: Avoid contact with animals! Do not feed animals either! Pre-exposure vaccination (2 injections and a booster after 1 year) is recommended especially for travelers with increased individual risk (traveling with two-wheelers, to remote areas, long-term stays, small children, cave explorers, contact with bats, etc.).
Post-exposure behavior: After an animal bite/scratch: Immediately wash the wound with soap and water for 15 minutes, then disinfect and in any case visit a quality medical center for post-exposure vaccination as soon as possible! For more information: see factsheet rabies.
Since the first week of August and as of 11 September 2023, 19 locally acquired dengue fever cases have been detected in the Lombardy (14) and Lazio (5) regions in Italy. The cases are grouped in three clusters:
All cases were laboratory confirmed by PCR and all cases have recovered or are improving.
A DENV-1 serotype virus was identified in the cases in Lombardy and in the metropolitan city of Rome, Lazio region. Epidemiological investigations have not identified any link between the cases in Lombardy and the cases identified in the Lazio region.
A DENV-3 serotype was detected in the cluster of cases in the province of Latina, Lazio region, indicating that this outbreak is independent from the other two in Italy.
Response and control measures are being implemented by Italian public health authorities. These include case finding, vector control activities, information to healthcare providers and the general public, and preventive measures for donors of substances of human origin (e.g. blood and organs).
So far, 146 imported dengue cases have been registered in Italy in 2023, most of them in the Lombardy region (50 imported cases) and Lazio region (28 imported cases).
For more details of the outbreak in Italy, see Rapid Communication of Eurosurveilance.
An outbreak of 4 autochthonous (locally transmitted) cases of dengue fever was detected in Gardanne in the department of Bouches-du-Rhône. Symptoms of the cases occurred between the second half of July and early August 2023.
At least 47 autochthonous cases were recorded in France in 2022. The affected regions were Occitania (9 cases) and Provence-Alpes-Cote d'Azur (36 cases).
Officials observe that the downward trend in terms of chikungunya continues, with a weekly average of about 40 cases per week in the last 3 weeks, dengue cases still remaining at an average of 100 weekly cases. The high dispersion of the cases is also maintained, covering practically the entire national territory.
The head of Health Surveillance, Guillermo Sequera, stated that it is striking that at the end of July we still have cases of dengue and chikungunya (usually there are no cases at this time). He expressed his concern about this scenario, considering that the rainy season is approaching -in October-, to this is added the phenomenon of El Niño, which could portend a complicated epidemiological scenario for the next season.
A man has been hospitalized in Ulan Bator with bubonic plague after eating marmot meat. This was reported by the National Center for the Study of Zoonotic Infections of Mongolia. According to Xinhua News Agency, the hospitalized man and 5 other people who were in close contact with him have been isolated.
While hunting marmots is illegal in Mongolia, many Mongolians regard the rodent as a delicacy and ignore the law. Of all the 21 Mongolian provinces, 17 are still at risk of the bubonic plague, urging the public not to hunt marmots or eat marmot meat.
According to the media, 8.64% of respiratory specimens handled by public laboratories tested positive for flu, higher than 8.57% recorded the week before, but below the baseline threshold level of 9.2%. The latest fatal case involved a 2-year-old boy who tested positive for influenza A and died on 28 July 2023.
Hong Kong has 2 flu seasons, one beginning in April and the second starting in August.
The ministries of health and agricultural development of the province have declared an epidemiological alert after the detection of cases of suspected trichinosis in the interior of Buenos Aires. So far, 29 people have been reported to have been exposed, 15 of whom developed symptoms; from the municipalities of Adolfo Alsina and Sallikelo, and the products included bacon and dried chorizo.
Samples of both products analyzed by the Applicant's laboratory tested positive for Trichinella spiralis. The sausages came from the plant "AGROINDUSTRIA LOS ANDRES SRL", with the trademark "Don Andrés" RPE No. 122-5 PAMS Exp No. 22500-39417/17 found in salami.
According to preliminary information, these products were distributed in the municipalities of Dayro, Hipólito Yrigoyen, Coronel Suárez, Saavedra, Tres Lomas, Trenque Lauquen, Puan, Rivadavia and Adolfo Alsina. Faced with this, medical teams were called in to strengthen the epidemiological surveillance of cases of trichinosis in the said municipalities, and the secretariats of health and food science departments of these areas were urged to continue the investigation.
Trichinellosis is a food-borne helminth infection caused by Trichinella spiralis. Homemade jerky and sausage are often the cause of many cases of trichinellosis. Salting, drying, freezing, smoking or microwaving meat alone does not consistently kill infective worms.
Therefore: Consume only well-cooked meat!
Optimal mosquito protection 24/7 (during the day against dengue, Zika, Chikungunya and other arboviroses, in the evening and at night against malaria). If you have a fever, take acetaminophen products and make sure you drink enough fluids. Do not take medications containing acetylsalicylic acid (e.g., Aspirin®), as they may increase the risk of bleeding. During and after a stay in a malaria endemic area, malaria should also be considered in case of fever and should always be ruled out by a blood test.
Optimal mosquito protection 24/7 (at dusk and at night against malaria, during the day against dengue, chikungunya and other arboviroses). Drug prophylaxis is recommended for parts of Palawan, see detailed information on the Phiilippines country page.
In case of fever >37.5° C, malaria should always be considered and excluded by blood tests.
So far this season (2023), 6 cases of Murray Valley Encephalitis (MVE) have been recorded, two of which were fatal. The Kimberley region has been particularly affected. This has been the worst season for MVE since 2012. Other arboviruses are also transmitted in Western Australia: dengue virus, Ross River virus, Japanese encephalitis virus, Barmah Forest virus, Kunjin virus, etc.
Murray Valley encephalitis virus is transmitted by mosquitoes. The risk of contracting and becoming ill is low, but the illness caused by the virus can be severe and possibly fatal.
Initial symptoms include fever, drowsiness, headache, stiff neck, nausea and dizziness. People who experience these symptoms should seek medical attention as soon as possible.
The Blitar District Health Office in East Java, Indonesia, reported 11 suspected diphtheria cases in the past 2 months, all of which required a stay in the intensive care unit of a hospital.
Diphtheria is caused by bacteria that are common worldwide. The pathogen produces a powerful toxin that can permanently damage organs such as the heart and liver. There are two types of the disease: respiratory (breathing) and cutaneous (skin) diphtheria. The pathogen primarily affects the upper respiratory tract and produces a toxin that can lead to dangerous complications and late effects. Person-to-person transmission occurs through droplet infection (close physical contact, coughing, sneezing). It originates from a sick person or from someone who carries the bacterium without symptoms. Less commonly, infection occurs through contaminated objects or, in the case of cutaneous diphtheria, through direct contact. Effective vaccination protects against the disease.
Protect yourself against ticks during outdoor activities (see Mosquito Protection Factsheet). Vaccination is recommended when staying in endemic areas. Complete basic immunization requires three doses of vaccine. Temporary protection exists after only two doses of vaccination. These first two vaccinations are usually given one month apart. The third vaccination is given 5-12 months after the second dose, depending on the vaccine. A booster vaccination is indicated after 10 years.
After recreational activities: Always examine their body for ticks or tick bites. If redness occurs after tick bite: Consult a physician to rule out Lyme disease, which would require antibiotic treatment.
In recent years, the world, and the Americas region in particular, has seen an exponential increase in international travel in search of medical care. While most patients seek this in the country in which they reside, there is a growing proportion of individuals who change countries for medical, dental or surgical treatment. This practice is referred to as medical and health tourism. For example, millions of Americans travel to other countries each year for medical care, especially to Mexico, Canada, and other countries in Central America, South America, and the Caribbean.
While there are few published studies on the number of people seeking medical care outside their country of residence, it is estimated that the annual number in the United States alone has increased from 750,000 to 1.4 million over a 10-year period (2007 to 2017). This number is expected to increase by 25% each year, both in the United States and globally. The main motivations for seeking outsourced medical care include lower costs, avoiding long waiting lists, the ability to access procedures that are not available in the country of residence, and the ability to combine health care with a vacation stay. Procedures related to cosmetic and aesthetic surgery account for the largest percentage of procedure types, followed by organ transplants, cardiac surgery, dental procedures, cancer treatment, joint treatments, bariatric surgery, and assisted artificial insemination techniques.
This type of medical care can pose a risk to both public health and the life of the person receiving that type of care. Public health risks include the occurrence and spread of outbreaks caused by resistant microorganisms. As for the patient, the most common complications are surgical wound infections and bacterial sepsis.
The risk of health care in other countries is related to the following factors, among others:
People with chronic diseases who take daily medications are at higher risk for complications and death during a heat wave, as are the elderly, children, pregnant women and outdoor workers!
If you feel dizzy and weak, or have severe thirst and headache, go to a cool, shady place to rest and drink water or fruit juice. Seek medical attention if you experience unusual symptoms such as confusion or vomiting. If you develop painful muscle cramps or other symptoms such as a persistent headache, you should also seek medical attention.
Some symptoms of heat-related illness, such as high fever, headache, loss of appetite, dizziness, or shortness of breath, may resemble symptoms of other illnesses. If you or someone else is uncomfortable in hot weather with a high temperature, you should consider the possibility of motion sickness and/or heat-related illness
Health authorities in the Czech Republic report an increase in hepatitis E cases in the Moravian-Silesian region and throughout the country. In 2022, a total of 319 cases of hepatitis E were reported, and by the end of May 2023, 221 new cases had already been reported.
Doctors assume that it could be contamination from insufficiently cooked meat, especially pork.
Although monkeypox (MPOX) cases have declined significantly in recent months, it is important to remember that the virus is still circulating at low levels. Some WHO member states continue to report new cases, and the possibility of reintroduction, either from endemic areas or newly affected countries, is likely.
Based on the findings of the current outbreak and the low number of new infections, the overall risk for MPOX remains moderate for men who have sex with men and very low for the general population. However, ECDC has warned of the possibility of an increase in cases next summer due to a series of celebrations such as Pride events and increased travel.
To kick off the summer festival season and Pride month, ECDC is releasing an updated fact sheet for health professionals. In addition, ECDC and the WHO Regional Office for Europe have provided a series of new infographics and social media maps on personal protective measures to consider for those at increased risk.
MPOX is transmitted primarily through skin contact, including during sex, with someone who has Mpox, even before symptoms appear.
An increase in leishmaniasis cases in the north of the country has been reported in Honduras. In May of this year alone, 20 cases were registered. For the full year 2022, the number of cases was 84 (2021: 112 cases).
An increase in cutaneous leishmaniasis was also observed in Nicaragua in the first months of the year, with 306 cases.
While the official WHO declaration is still pending, Peru formally falls under category 1 of the WHO temporary poliomyelitis vaccination recommendations:
Outbreaks of botulism are very rare and may be associated with a natural, accidental, or possibly intentional source of infection.
If considering a visit despite COVID-19 pandemic, the following precautions are recommended:
General:
Recommended vaccinations and other health risks: see country page China
While the official WHO IHR statement is still pending, Botswana and Zambia formally fall under category 2 of the WHO temporary poliomyelitis vaccination recommendations:
Travelers are usually at low risk of contracting Ebola if you follow these precautions:
Vaccination against Ebola is not available to travellers.
For humanitarian missions, it is recommended to consult a travel medicine specialist.
If you have symptoms of illness (fever >38 °C, headache, diarrhea, bleeding symptoms, etc.) during travel until 21 days after being in the affected area:
Isolate yourself and immediately contact the hotline in the country by phone or contact a tropical institute or a university hospital infectious disease unit. Always state that you may have had an exposure to Ebola.
While the official WHO declaration is still pending, Indonesia formally falls under category 2 of the temporary WHO poliomyelitis vaccination recommendations:
While the official WHO IHR statement is still pending, Botswana formally falls under category 2 of the WHO temporary poliomyelitis vaccination recommendations:
Follow the official and media reports.
Since 1 November 2022, WHO considers the public health risk to be very high at the national level, high at the regional level and low at the global level.
Travelers are usually at low risk of contracting Ebola if you follow these precautions:
Vaccination against Ebola is not available to travellers.
For humanitarian missions, it is recommended to consult a travel medicine specialist.
If you have symptoms of illness (fever >38 °C, headache, diarrhea, bleeding symptoms, etc.) during travel until 21 days after being in the affected area:
Isolate yourself and immediately contact the hotline in the country by phone or contact a tropical institute or a university hospital infectious disease unit. Always state that you may have had an exposure to Ebola.
If considering a visit, the following precautions are recommended:
General Precautions:
The following vaccinations are recommended:
Country requirements:
Travelers are generally at low risk of contracting Ebola if you follow these precautions:
Vaccination against Ebola is not available to travelers.
For humanitarian missions, it is recommended to consult a travel medicine specialist.
If you have symptoms of illness (fever >38°C, headache, diarrhea, bleeding symptoms, etc.) during travel until 21 days after being in the affected area:
Isolate yourself and immediately contact the hotline by phone or contact a tropical institute or university hospital infectious disease department. Always state that you may have had an exposure to Ebola.
Travelers are generally at low risk of contracting Ebola if you follow these precautions:
Vaccination against Ebola is not available to travelers.
For humanitarian missions, it is recommended to consult a travel medicine specialist.
If you have symptoms of illness (fever >38°C, headache, diarrhea, bleeding symptoms, etc.) during travel until 21 days after being in the affected area:
Isolate yourself and immediately contact the hotline by phone or contact a tropical institute or university hospital infectious disease department. Always state that you may have had an exposure to Ebola.
Travelers are generally at low risk of contracting Ebola if you follow these precautions:
Vaccination against Ebola is not available to travelers.
For humanitarian missions, it is recommended to consult a travel medicine specialist.
If you have symptoms of illness (fever >38°C, headache, diarrhea, bleeding symptoms, etc.) during travel until 21 days after being in the affected area:
Isolate yourself and immediately contact the hotline by phone or contact a tropical institute or university hospital infectious disease department. Always state that you may have had an exposure to Ebola.
Formally, D.R. Congo thus falls under the WHO temporary polio vaccination recommendations category 1 ("States infected with WPV1, cVDPV1 or cVDPV3 with potential risk of international spread"), but the official WHO declaration is still pending:
Travelers are generally at low risk of contracting Ebola if you follow these precautions:
Vaccination against Ebola is not available to travelers.
For humanitarian missions, it is recommended to consult a travel medicine specialist.
If you have symptoms of illness (fever >38°C, headache, diarrhea, bleeding symptoms, etc.) during travel until 21 days after being in the affected area:
Isolate yourself and immediately contact the in-country hotline by phone or contact a tropical institute or university hospital infectious disease department. Always state that you may have had an exposure to Ebola.
The risk is low. People who are over 60 years of age, have an underlying disease, or have a weakened immune system are at higher risk for the more severe form of West Nile virus.
The following precautions are recommended:
If you have visited a West Nile fever transmission area, do not donate blood for at least 28 days after your return.
Formally, this means Algeria falls again under the WHO temporary polio vaccination recommendations (category 2: "States infected with cVDPV2, with potential or demonstrated risk of international spread"), confirmation by the IHR committee is still pending. Meaning: Persons staying in the country for > 4 weeks are strongly recommended to have a min. 4 weeks and a a max. 12 months old polio booster vaccination (IPV) with documentation in the international vaccination certificate when leaving Algeria. This is important to prevent the spread of poliomyelitis virus from the country and can be checked upon departure. Persons staying in the country for <4 weeks are recommended to have a booster vaccination every 10 years in addition to a basic polio immunization.
Preliminary analysis of samples revealed two positive Marburg virus cases. The two patients from the southern Ashanti region - both deceased and unrelated - presented symptoms of diarrhea, fever, nausea and vomiting. Preparations for a possible outbreak response are being made rapidly as further investigations are in progress.
Marburg is transmitted to humans by bats (fruit bats) and spreads in humans through direct contact with bodily fluids of infected persons, surfaces, and materials. The disease begins abruptly with high fever, severe headache and discomfort. Many patients develop severe hemorrhagic symptoms within seven days. Mortality rates have varied from 24% to 88% in previous outbreaks, depending on the strain of virus and case management.
Most of the laboratory-confirmed cases (2933/3413; 86%) were reported from the WHO European Region. In Switzerland, there have been 81 confirmed cases since May 21 and up to June 29.
Clinical presentation: The cases so far have been mild, there have been no deaths yet. Hospitalised patients have mostly been admitted for local isolation orders. The clinical picture is characterised by lesions that are atypical of the clinical picture in endemic countries. Currently, there are mainly very few, non-grouped, painless pustular lesions on the genitals, perianally and orally. Whether transmission occurs through genital secretions or primarily only through close skin-to-skin contact is not yet clear. The draining lymph nodes are sometimes massively swollen, and fever usually occurs for a few days. The general condition is often only slightly reduced.
Transmission: The virus can be transmitted from person to person via the respiratory tract, through direct contact with body fluids of an infected person or with virus-contaminated objects. The incubation period is 5-21 days, usually about 7-17 days. Monkeypox is transmitted from infected animals through a bite or through direct contact with blood, body fluids or lesions of the infected animal. They can be transmitted to people who eat infected animals via abrasions in the mouth, source, NCDC.
Symptoms: Symptoms of monkeypox include fever, headache, muscle aches, swollen lymph nodes and chills. 1- 3 days after the onset of symptoms, a rash develops that may look like chickenpox or syphilis and spreads from the face to other parts of the body, including the genitals. The disease is usually mild. In immunocompromised individuals, the disease can be severe. The mortality rate is about 1% for the West African type and up to 10% for the Central African type.
If the clinical picture is suggestive, individuals should also be isolated, tested, and screened for monkeypox.
MANDATORY REPORTING: In Switzerland, every suspected case must be reported within 2 hours to the respective cantonal doctor and to the FOPH (tel. +41 58 463 87 06)! Specialist laboratories, such as the Reference Laboratory for Imported Viral Diseases (HUG) or the Spiez Laboratory or the ZBS1 at the Robert Koch Institute (RKI; consiliary laboratory for smallpox), offer molecular diagnostics for the identification of monkeypox infections (material: crust or vesicular fluid).
Geosentinel requests confirmed and suspected cases to be reported at: geosennel@geosentinel.org
The risk is higher for the disabled, pregnant, already fragile, poor, displaced, homeless, children, elderly, and outdoor workers!
According to the ECDC (as of June 8, 2022), a total of 1'177 cases have been confirmed worldwide (including EU/EEA). Cases occurred mainly in gay, bisexual and other men who have sex with men (GBMSM), though not exclusively. Most of the cases outside the UK, Canada and US are reported to be linked to travel. However, cases with no known travel history, contact with other cases, animals or specific events are also reported.
Clinical presentation: The cases so far have been mild, there have been no deaths yet. Hospitalised patients have mostly been admitted for local isolation orders. The clinical picture is characterised by lesions that are atypical of the clinical picture in endemic countries. Currently, there are mainly very few, non-grouped, painless pustular lesions on the genitals, perianally and orally. Whether transmission occurs through genital secretions or primarily only through close skin-to-skin contact is not yet clear. The draining lymph nodes are sometimes massively swollen, and fever usually occurs for a few days. The general condition is often only slightly reduced.
Transmission: The virus can be transmitted from person to person via the respiratory tract, through direct contact with body fluids of an infected person or with virus-contaminated objects. The incubation period is 5-21 days, usually about 7-17 days. Monkeypox is transmitted from infected animals through a bite or through direct contact with blood, body fluids or lesions of the infected animal. They can be transmitted to people who eat infected animals via abrasions in the mouth, source, NCDC.
Symptoms: Symptoms of monkeypox include fever, headache, muscle aches, swollen lymph nodes and chills. 1- 3 days after the onset of symptoms, a rash develops that may look like chickenpox or syphilis and spreads from the face to other parts of the body, including the genitals. The disease is usually mild. In immunocompromised individuals, the disease can be severe. The mortality rate is about 1% for the West African type and up to 10% for the Central African type.
Prevention: Good personal hygiene. Avoid close contact with sick people, including those with skin lesions or genital lesions, and animals at all costs. Avoid contact with contaminated materials used by sick people. During stays in West and Central Africa: Do not consume bushmeat.
The individual risk of contact with a patient with monkeypox depends on the type and duration of contact. In case of very close contact with a case (e.g., family members, aeroplane neighbours, medical staff, sexual partners), the risk of infection is moderate, otherwise low.
If the clinical picture is suggestive, persons should also be isolated, tested and reported for monkeypox.
MANDATORY REPORTING: In Switzerland, every suspected case must be reported within 2 hours to the respective cantonal doctor and to the FOPH (Tel. +41 58 463 87 06) ! Special laboratories, such as the Reference Laboratory for Imported Viral Diseases (HUG) or the Spiez Laboratory or the ZBS1 at the Robert Koch Institute (RKI; consiliary laboratory for smallpox), offer molecular diagnostics for identifying monkeypox infections (material: crust or vesicular fluid).
Geosentinel asks to report confirmed and suspected cases at: geosennel@geosentinel.org
In the beginning of May 2022, one case of monkeypox was detected in England, which had occurred after travel to Nigeria. In the course of this, 6 further cases of monkeypox were diagnosed in England in people with no previous travel and no contact with known travel-associated cases. These are two cases in one family and four cases in men who have sex with men (MSM). The latter apparently got infected in London. Apart from the family and two of the MSM cases, there are no known links between the cases. Further 2 cases have been reported in the meantime. Investigations into the sources of infection and other suspected cases are in progress.
Additional cases are reported by GeoSentinel and various media reports from the following countries:
Description: Monkeypox is a zoonosis caused by an orthopoxvirus, a DNA virus genetically related to the variola and vaccinia viruses. Monkeypox is endemic in West and Central Africa. Increased cases have been recorded in Nigeria since September 2017, and imports by returning travellers to England and the USA have also been recorded more frequently in recent years. There are two types of monkeypox virus: the West African type and the Central African type (Congo Basin).
Transmission: Monkeypox is transmitted from infected animals by a bite or by direct contact with blood, body fluids or lesions of the infected animal. It can be transmitted via abrasions in the mouth to people who eat infected animals. It can also be transmitted from person to person via the respiratory tract, through direct contact with body fluids of an infected person or with virus-contaminated objects. The incubation period is 5-21 days, usually about 7 to 17 days.
Symptoms: Symptoms of monkeypox include fever, headache, muscle aches, swollen lymph nodes and chills. 1- 3 days after the onset of symptoms, a rash develops that may look like chickenpox or syphilis and spreads from the face to other parts of the body, including the genitals. The disease is usually mild. In immunocompromised individuals, the disease can be severe. The mortality rate is about 1% for the West African type and up to 10% for the Central African type.
For further details, see WHO factsheet, ECDC and CDC.
Further cases must be expected. Persons showing symptoms as described above should contact a doctor, ideally in advance by telephone. Persons who have several sexual partners or practice casual sex should be particularly vigilant!
Prevention: Good personal hygiene, avoid contact with infected persons and animals at all costs. During stays in West and Central Africa: No consumption of bushmeat. The individual risk of contact with a patient with monkeypox depends on the type and duration of contact. In the case of very close contact with a case (e.g. family members, aeroplane neighbours, medical personnel), the risk of infection has so far been classified as moderate; in the case of sexual / intimate contact, it is probably high.
In case of corresponding clinic, persons without travel history should also be isolated, tested and reported for monkeypox.
MANDATORY REPORTING: In Switzerland, every suspected case must be reported within 2 hours to the respective cantonal doctor and to the FOPH (Tel. +41 58 463 87 06) ! Special laboratories, such as the Reference Laboratory for Imported Viral Diseases (HUG) or the Spiez Laboratory or the ZBS1 at the Robert Koch Institute (RKI; consiliary laboratory for smallpox), offer molecular diagnostics for identifying monkeypox infections (material: crust or vesicular fluid).
Geosentinel asks to report confirmed and suspected cases at: geosennel@geosentinel.org
Source image: NCDC
WHO 18.5.2022, RKI 19.5.2022, UK GOV, 16.5.2022, Outbreak News Today, 18.5.2022, CDC, Labor Spiez
Travelers are usually at low risk of contracting Ebola if you follow these precautions:
Vaccination against Ebola is not available to travelers.
For humanitarian missions, it is recommended to consult a travel medicine specialist.
If you have symptoms of illness (fever >38 °C, headache, diarrhea, bleeding symptoms, etc.) during travel until 21 days after being in the affected area: Isolate yourself and immediately contact the in-country hotline by phone or contact a tropical institute or university hospital infectious disease unit. Always state that you may have had an exposure to Ebola.
Protect yourself against ticks during outdoor activities (see factsheet mosquito and tick bite protection). Vaccination against TBE is recommended for (planned) stays in endemic areas (CH: throughout Switzerland except cantons of Geneva and Ticino).
After recreational activities: Always examine your body for ticks or tick bites. If redness appears at least 3 days (7-10 days on average) after tick bite: consult a physician to rule out erythema migrans (Lyme disease), which would require antibiotic treatment.
The Swiss Expert Committee for Travel Medicine (ECTM) - a body of the Swiss Society for Tropical and Travel Medicine (FMH) - has revamped the Safetravel® website and renamed it to HealthyTravel.ch. The website continues to offer basic travel medicine recommendations for laypersons free of charge. Professionals can also subscribe to additional travel medicine information and recommendations such as in-depth country-specific information, vaccination recommendations with expert opinions, detailed maps (including malaria recommendations), fact sheets (including e.g. dosage information for malaria prophylaxis) and other important travel medicine content. These can be used during travel medicine consultation of patients and clients and can be individually compiled for the traveller, printed out or sent electronically.
The recommendations and content on HealthyTravel.ch reflect the recommendations of the Swiss Expert Committee for Travel Medicine. They are developed in cooperation with the Federal Office of Public Health (FOPH). The website is under construction and will be continuously expanded with additional content and updates. Please note that all content available on the website HealthyTravel.ch is protected by copyright and may not be passed on to third parties.
Further information can be found in the flyer (LINK). The Swiss Expert Committee for Travel Medicine will be happy to answer any questions at info@healthytravel.ch !
Protect yourself optimally around the clock (24/7) against mosquitoes (see factsheet mosquito and tick bite protection): at dusk and at night against malaria, during the day against dengue and other arboviruses.
If you should have a fever > 37.5°C: visit a medical facility immediately and take a blood test for malaria (see also factsheet malaria).
Protect yourself optimally around the clock (24/7) against mosquitoes (see factsheet mosquito and tick bite protection): during the day against dengue, chikungunya, Zika and other viruses, at dusk and at night against malaria. If you should have a fever: take medication containing the ingredient paracetamol and make sure you drink enough fluids. Do not take any medication containing the ingredient acetylsalicylic acid (e.g. Aspirin®), as this can increase the bleeding tendency in the event of a dengue infection (see also factsheet dengue). If you have visited a malaria area and have a fever >37.5 °C, you should always exclude malaria by taking a blood smear on the spot. Visit a medical facility for this (see also factsheet malaria).
In the first three months of 2022, 99 probable cases of leptospirosis were registered in Petrópolis, compared to only three reports in the same period of 2021. The region was hit by heavy rains and flooding in February 2022, which increased again in recent days.
Leptospires are bacteria that can be transmitted via the urine of rodents (especially rats). This can happen, for example, when wading through contaminated rivulets, puddles or mud. Transmission to humans occurs via small skin lesions or mucosal contacts through direct or indirect contact with rodent urine. Symptoms of the disease range from flu-like general symptoms, headache, high fever to blood poisoning. Antibiotic treatment is necessary to prevent complications and accelerate healing.
The dengue virus also occurs in Africa! The spread on the African continent is probably underestimated due to a lack of diagnostics.
Protect yourself optimally around the clock (24/7) against mosquitoes (see factsheet mosquito and tick bite protection): during the day against dengue, chikungunya, and other viruses, at dusk and at night against malaria. If you should have a fever: take medication containing the ingredient paracetamol and make sure you drink enough fluids. Do not take any medication containing the ingredient acetylsalicylic acid (e.g. Aspirin®), as this can increase the bleeding tendency in the event of a dengue infection (see also factsheet dengue). If you have visited a malaria area and have a fever >37.5 °C, you should always exclude malaria by taking a blood smear on the spot. Visit a medical facility for this (see also factsheet malaria).
At the beginning of March, an almost 4-year-old girl from Jerusalem was diagnosed with acute flaccid paralysis. Circulating vaccine poliovirus type 3 (cVDPV3) was detected in the stool. In the course, another 5 persons were diagnosed with cVDPV3 and one suspected case is still awaiting test results. All 7 persons had not been vaccinated against polio.
Further testing revealed genetic links to VDPV3 strains detected in environmental samples collected from sites in Jerusalem and Bethlehem between September 2021 and January 2022. Health authorities are currently conducting epidemiological and virological investigations on site to further determine the source and origin of the isolated virus and the associated potential risk of further spread.
The Brazilian Ministry of Health reports a 35.4% increase in dengue cases in the first two months of this year compared to 2021, with 30 deaths and 128,379 cases registered, according to the report. The municipalities with the most probable dengue cases were Goiânia, Brasília, Palmas, Sinop and Aparecida de Goiânia.
Consequences for travelers
Protect yourself optimally around the clock (24/7) against mosquitoes (see factsheet mosquito and tick bite protection): during the day against dengue, chikungunya, Zika and other viruses, at dusk and at night against malaria if you are in a risk area. If you have a fever: take medication containing the active ingredient paracetamol and make sure you drink enough fluids. Do not use any medicines containing the active ingredient acetylsalicylic acid (e.g. Aspirin®), as this can increase the tendency to bleed in the case of a dengue infection (see also factsheet dengue). During stays in malaria areas, malaria should always be ruled out by means of a blood smear if the fever is >37.5 °C. Visit a medical facility to do so (see also factsheet malaria).
References
Since the beginning of 2022, 33 suspected Lassa cases have been recorded in Liberia, 17 confirmed and 5 fatal. The cases come from Bong County, Grand Bassa Counte and Nimba County. In Togo, 1 case was confirmed in the north of the country at the end of February.
Lassa virus is transmitted via rodent excretions, e.g. through contaminated food, or it is inhaled. Human-to-human transmission occurs through contact with body fluids of infected persons. Lassa belongs to the group of haemorrhagic fevers. The symptoms of the disease range from mild flu-like symptoms to fever with bleeding.
Consequences for travelers
Wash or disinfect hands regularly and maintain optimal food hygiene. Mouse-infected places should be avoided. Avoid contact with ill or deceased persons suspected of having Lassa fever.
References
The World Health Organisation (WHO) reported four cases of monkeypox in the last week of February, including 2 deaths in the Central African Republic. At least one monkeypox epidemic is recorded in the country every year.
Consequences for travelers
Monkeypox is endemic in countries in West and Central Africa. The individual risk of contact with a patient with monkeypox depends on the type and duration of contact. Transmission occurs from animal to human through contact with infected material (usually "bush meat" preparation). In case of very close contact with a patient (e.g. family members, neighbours on an plane, medical staff), the risk of infection is moderate, otherwise low.
References
In India, two women from Vemulamada village in the southern state of Andhra Pradesh died of rabies on the same day, two months after being bitten by a cat. According to the villagers, the cat had contracted rabies because it had previously been bitten by a rabid dog. The cat also died later on. According to the report, the women received tetanus toxoid injections and medication for the cat bite, but no mention was made of post-exposure prophylaxis (PEP) against rabies.
Consequences for travelers
Avoid contact with animals (never feed them!). After an animal bite/scratch, wash the wound with running water and soap for 15 minutes, disinfect and in any case visit a high-quality medical centre (post-exposure vaccination). For long-term travellers and travellers with increased individual risk (travelling with two-wheelers, to remote areas, long-term stays, small children, etc.), a pre-exposure vaccination is recommended before the stay.
References
A yellow fever outbreak has been confirmed in Isiolo district (see map). So far, 4 people have died and investigations are pending for another 15 people. The first case was apparently already confirmed in January.
The outbreak takes place in a sparsely populated and not very attractive area for tourists. Nevertheless, the epidemic potential of yellow fever is evident with very low vaccination coverage nationwide.
Vaccination campaigns are planned. The last local cases of yellow fever occurred in the early 1990s.
Consequences for travelers
Yellow fever vaccination is now recommended by the Swiss Expert Committee for Travel Medicine (ECTM) for all travellers to Kenya (whole country) until further data becomes clear. For immunocompetent persons, a yellow fever vaccination with a one-time second vaccination after 10 years (i.e. a maximum of 2 vaccinations in a lifetime) is recommended. In the case of travellers returning from Kenya from this region who exhibit fever, a yellow fever infection must be considered and ruled out by means of laboratory analyses (incubation period typically 3-6 days).
References
Kenya on alert as it reports outbreak of yellow fever – MINISTRY OF HEALTH
https://promedmail.org/ - Archive Number: 20220309.8701889
Health authorities in Malawi declare an outbreak on 17 Feb 2022 after a case of wild poliovirus type 1 is confirmed in Malawi/Lilongwe (disease began in Nov 2021). The pathogen is related to a strain from Pakistan (Sindh), where wild polio is still circulating.
Africa was declared free of indigenous wild polio in August 2020 after all forms of wild polio were eliminated in the region. In Malawi, the last clinically confirmed case of wild polio was reported in 1992.
Polio is transmitted through water or contaminated food and can cause permanent, disabling paralysis. There is no treatment, but vaccination prevents the disease.
Consequences for travelers
The vaccination reliably protects against infection: 4 doses during childhood or 3 doses during adulthood and a booster vaccination every 10 years for all countries in sub-Saharan Africa and for countries that are classified as vulnerable to polio outbreaks.
References
Two cases of circulating poliovirus type 2 have been reported, one in each of the provinces of Nampula and Cabo Delgado. These cases occurred already in December 2021.
Consequences for travelers
Formally, Mozambique is again included in the temporary polio vaccination recommendations of the WHO (category 2: "States infected with cVDPV2, with potential or demonstrated risk of international spread"), a confirmation by the IHR committee is still pending. This means:
Persons who are staying in the country for > 4 weeks are strongly recommended to have a minimum of 4 weeks and a maximum of 12 months of recent polio vaccination (IPV) with documentation in the international vaccination card when leaving Mozambique. This is important to avoid the spread of poliomyelitis viruses from the country and can be checked upon departure.
Persons staying in the country for < 4 weeks are recommended to receive a booster vaccination every 10 years in addition to a basic immunisation against polio.
References
According to media citing the National Institute of Communicable Diseases of South Africa, at least 160 cases of typhoid fever have been reported since 16 February 2022, a significant increase over the average incidence. Cases have been recorded in 8 of the 9 provinces, with the highest number of cases recorded so far in Guateng (45 cases) and Western Cape (64 cases, including in Cape Town and Garden Route N.P.). The source of infection is still under investigation; in the Western Cape, well water has been ruled out as a source.
Consequences for travelers
Optimal food and drinking water hygiene is recommended. In case of poor sanitary conditions, vaccination against abdominal typhoid may be considered. In case of fever, a doctor should be consulted.
References
According to IATA (International Air Transport Association), Egypt has adjusted the entry requirements (new countries marked in bold): Vaccination against polio is mandatory for entry from the following countries (with documentation in the 'International Certificate for Vaccination'):
Afghanistan, Angola, Benin, Burkina Faso, Cameroon, Central African Republic, Chad, China, Côte d'Ivoire, D.R. Congo, Ethiopia, Gambia, Ghana, Guinea, Iran, Kenya, Liberia, Madagascar, Mali, Niger, Nigeria, Pakistan, Republic of Congo, Senegal, Sierra Leone, Somalia, Sudan, South Sudan, Tajikistan, Togo, Uganda and Yemen.
Consequences for travelers
The vaccination must be administered at least 4 weeks before entry and must not date back more than 1 year.
References
IATA, Travel International Manual, February 2022
The Rio Carnival will take place from 20 to 30 April 2022. The events will be held throughout the city of Rio de Janeiro.
Consequences for travelers
Mass events can promote gastrointestinal and respiratory infections. Good food and personal hygiene and plenty of hydration are recommended. The risk of accidents may also be increased. To avoid sexually transmitted diseases (HIV, syphilis, gonorrhoea, chlamydia, etc.): be sure to follow safe sex practices!
Recommended vaccinations: COVID-19 vaccination (see also entry regulations!), yellow fever, MMR varicella (if infection has not been passed), tetanus, diphtheria, pertussis, poliomyelitis (basic immunisation only), hepatitis A and B, influenza and meningococcal ACWY. Further vaccinations depending on travel style and destination, see country page Brazil www.healthytravel.ch.
Mosquito protection 24/7 is strongly recommended throughout the country, including cities, to avoid various arboviruses such as dengue, chikungunya, Zika. The city of Rio de Janeiro is malaria-free, but malaria is endemic in the Atlantic rainforest of Rio de Janeiro state. For more malaria risk areas and recommended prevention measures, see country page Brazil www.healthytravel.ch.
References
Various
Timor-Leste has been reporting an outbreak of dengue cases since the end of 2021. In the month of January 2022 alone, a total of 1,286 cases were registered. This compares to 901 cases in the whole of 2021 and 1'451 cases in the whole of 2020. More than half of the cases were reported from the capital region of Dili.
Consequences for travelers
Protect yourself optimally around the clock (24/7) against mosquitoes (see factsheet mosquito and tick bite protection): during the day against dengue, at dusk and at night against malaria. If you should have a fever: take medication containing the ingredient paracetamol and make sure you drink enough fluids. Do not take any medication containing the ingredient acetylsalicylic acid (e.g. Aspirin®), as this can increase the bleeding tendency in the event of a dengue infection (see also factsheet dengue). If you have visited a malaria area and have a fever >37.5 °C, you should always exclude malaria by taking a blood smear on the spot. Visit a medical facility for this (see also factsheet malaria)
References
Dengue infections in the state of Minas Gerais in Brazil are increasing sharply after heavy rains. According to the health department, a 224% increase was observed with a total of 577 cases at the beginning of February.
Consequences for travelers
Protect yourself optimally around the clock (24/7) against mosquitoes (see factsheet mosquito and tick bite protection). If you should have a fever: take medication containing the ingredient paracetamol and make sure you drink enough fluids. Do not take any medication containing the ingredient acetylsalicylic acid (e.g. Aspirin®), as this can increase the bleeding tendency in the event of a dengue infection (see also factsheet dengue).
References
Outbreaknewstoday, 7.2.2022
According to official sources, at least 74 children have died of measles in Badakhshan province in northern Afghanistan.
Since the end of July 2021, measles cases and deaths have increased in all provinces, with the highest weekly number observed in the last four weeks in January 2022. Measles vaccination uptake rates are very low among the population. The World Health Organisation warned of many measles deaths in Afghanistan as early as November 2021.
Measles is a highly contagious viral disease transmitted through the respiratory tract. It is spread all over the world. The disease can be prevented very effectively with a vaccine.
Consequences for travelers
A trip offers an ideal opportunity to check the protection against measles (2x vaccinated or passed measles infection) and if necessary to update the vaccination protection. This is especially relevant for humanitarian missions.
References
Via ProMED 11.2.2022
In 2021, a total of 21'030 malaria cases were registered by 21.11.2021, compared to 27'573 cases in the same period in 2020. The reporting figures have increased compared to previous years.
In addition, Nicaragua is the country in Central America with the highest increase in Plasmodium falciparum malaria. This type of malaria is a severe form of malaria that can quickly become fatal if left untreated.
Consequences for travelers
Protect yourself optimally against mosquitoes around the clock (see factsheet mosquito and tick bite protection): during the day against dengue fever, chikungunya, Zika and other viruses, at dusk and at night against malaria. In addition, if you are staying in high-risk areas (north-eastern Nicaragua), it is recommended that you take medicinal malaria prophylaxis. If you have a fever >37.5 °C, you should consult a local doctor to rule out malaria. Visit a medical facility for this purpose (see also factsheet malaria).
References
Outbreaknewstoday.com, mesvaccins.net, 31.1.2022
Health authorities in South Africa reported the first case of human rabies in 2022. The diagnosis was confirmed in a four-year-old child in Gqerberha (Port Elizabeth) of the Eastern Cape province. He was bitten on the lip by a dog he was playing with on 1 December 2021. Post-exposure prophylaxis (PEP) against rabies was not arranged. One month later, the child was admitted to hospital with rabies symptoms.
In 2021, a total of 19 confirmed human rabies cases were reported in the Eastern Cape provinces.
Consequences for travelers
Avoid contact with animals (never feed them!). After an animal bite/scratch, wash the wound with running water and soap for 15 minutes, disinfect and in any case visit a high-quality medical centre (post-exposure vaccination). For long-term travellers and travellers with increased individual risk (travelling with two-wheelers, to remote areas, long-term stays, small children, etc.), a pre-exposure vaccination before the stay (2 injections and a booster after 1 year) is recommended.
References
Outbreaknewstoday.com, mesvaccins.net, 3.2.2022
2022 is the Year of the Tiger; Chinese New Year falls on Feb. 1, 2022, and a highlight will be the Lantern Festival on Feb. 15, 2022. In addition, the Olympic and Para-Olympic Games in Beijing, Yanqing, in Zhangjiakou and in Hebei Province are scheduled for February 4-20 and March 4-13, 2022, respectively.
Consequences for travelers
If considering a visit despite COVID-19 pandemic, the following precautions are recommended:
General:
Recommended vaccinations and other health risks:
See China country page
References
Diverse. Olympische Spiele, Bejing 2022
In 2021, a total of 1,567 cases with West Nile virus (WNV) infection were recorded in the state of Arizona, with 110 cases being fatal. This is by far the highest number of reported cases in recent decades. As a possible cause for the huge increase in 2021, it could have been the extremely wet summer, which led to an increased mosquito population, as well as very warm temperatures still in November to early December, which could have extended the transmission season.
West Nile viruses belong to the flavivirus family and are transmitted by Culex mosquitoes. The main hosts are birds. Most cases are asymptomatic; clinically symptomatic cases present fever and flu-like symptoms. In severe cases, the disease can cause meningitis or encephalitis. Recovery from severe disease may take several weeks or months, and some of the neurological problems may be permanent. In rare cases, death may occur. Elderly people, pregnant women, and immunosuppressed individuals are at higher risk for severe disease progression.
Consequences for travelers
Optimal mosquito bite protection especially at dusk and dawn. Sick and dead birds should not be touched.
References
Due to an increase in leptospirosis cases, the Department of Antioquia has issued a warning. So far, the municipalities most affected are Medellín, with 70 confirmed cases, Apartadó (54 cases), Turbo (29 cases) and Puerto Berrío (18 cases). Large accumulations of waste in some areas (especially in the city of Medellín) favor the presence of rodents.
In 2021, the total number of leptospirosis cases registered nationwide was 2269, including 14 deaths. The cities of Cali, Bogotá and Medellín were particularly affected.
Consequences for travelers
Wear protective clothing/boots when wading through water! Leptospires are transmitted via the urine of rodents (especially rats), e.g. in water residues (rivulets, puddles, etc.) or mud. Transmission to humans occurs via small skin lesions or mucosal contacts through direct or indirect contact with rodent urine. The symptoms range from flu-like general symptoms to meningitis (aseptic meningitis) to sepsis. The disease can be treated with antibiotics. Vaccination is not generally available.
References
In Andresito, Misiones province in northeastern Argentina, two people have died from botulism and six affected persons are still in intensive care. The source of infection is believed to be homemade sausages that the affected persons had consumed.
Botulism, caused by toxins from the bacterium Clostridium botulinum, is usually associated with home-canned food, be it home-canned vegetables, meat or fish. Botulinum toxin cannot be smelled, nor does it have a specific taste. Botulinum toxins are among the most potent poisons known and are on the list for potential bioweapons agents.
Consequences for travelers
Consumption of home-made sausages should be avoided. Food botulism is prevented by proper preparation of canned food and industrial controls. Bombed canned foods are considered suspect and must be destroyed.
References
Five Americans died from rabies in 2021, the highest number in a decade. According to health officials, some of these people did not know they were at risk of infection or refused life-saving vaccinations.
Consequences for travelers
Avoid contact with animals! Do not feed animals either! For long-term travelers and travelers with increased individual risk (travel with two-wheelers, to remote areas, small children, work with animals, cave explorers, etc.) a pre-exposure vaccination before the stay (2 injections and a booster after 1 year) is recommended.
Behavior after exposure:
After an animal bite/scratch: immediately wash the wound with running water and soap for 15 minutes, then disinfect and in any case visit a high-quality medical center for post-exposure vaccination as soon as possible!
For more information: see factsheet rabies
References
According to the World Health Organization (WHO), 1'380'955 clinical cases of typhoid fever have been reported in the DRC since the beginning of 2021 and up to December 12, including 502 deaths.
Consequences for travelers
Follow optimal food and drinking water hygiene ("cook it, boil it, peel it or forget it"). Vaccination against typhoid fever is especially recommended for persons visiting friends and relatives (VFRs) and for travelers where sanitary conditions are poor during their stay. For more details, see factsheet typhoid fever
References
In 2021, nine countries in the WHO African Region (Cameroon, Chad, Central African Republic (CAR), Côte d'Ivoire, Democratic Republic of Congo (DRC), Ghana, Niger, Nigeria, and Republic of Congo) reported human yellow fever cases that were confirmed in the laboratory. The number of cases in these outbreaks is increasing compared to previous years. Yellow fever cases classified as probable have also been reported in Benin, Burkina Faso, Gabon, Mali, Togo, and Uganda.
Some of the affected countries are classified as fragile, conflict-affected, or vulnerable, where population immunity to yellow fever is low.
Consequences for travelers
Yellow fever vaccination is strongly recommended when traveling to yellow fever endemic areas, see country pages www.healthytravel.ch/countries/ or 'Reisemedizinischen Tabellen' of the FOPH: LINK.
References
WHO DON, 23.12.2021
A 13-year-old girl contracted rabies after being bitten by her own dog, according to the head of the Zoonosis Program of the Departmental Health Service (SEDES) in Potosí, southeastern Bolivia. A few days after the bite, she had a series of health problems for which she was admitted to the intensive care unit of a medical center. The rabies diagnosis was confirmed by laboratory tests.
Consequences for travelers
Avoid contact with animals (never feed them!). After an animal bite/scratch, wash the wound with running water and soap for 15 minutes, disinfect and in any case visit a quality medical center (post-exposure vaccination). For long-term travelers and travelers with increased individual risk (travel with two-wheelers, to remote areas, long-term stays, small children, work with animals, cave explorers, etc.), a pre-exposure vaccination before the stay (2 injections and a booster after 1 year) is recommended.
References
The epidemiological authority of the state of Santa Catarina has reported 8 human cases of yellow fever this year, including three deaths. None of the victims were vaccinated. In addition, monkey deaths continue to be observed in Santa Catarina State: In 2021, there were a total of 625 cases in monkeys, and yellow fever infection was confirmed in 137 cases.
Yellow fever is a life-threatening viral disease transmitted by mosquitoes. There is no specific therapy, but there is a very effective vaccination. It is the best way to protect yourself from yellow fever. In addition, optimal mosquito protection is important. For children under 9 months, pregnant women, nursing mothers, people with immunodeficiency or thymus disease who want to travel to Brazil, we recommend to consult a specialist in travel and tropical medicine.
Consequences for travelers
In Brazil, the main season for yellow fever infections is between December and May. Yellow fever vaccination is recommended by the WHO for most regions in Brazil. Due to the increasing spread even in areas previously declared to be free of yellow fever, the Swiss Expert Committee for Travel Medicine (ECTM) recommends yellow fever vaccination for all of Brazil. For immunocompetent persons, a yellow fever vaccination with a one-time second vaccination after 10 years (i.e. a maximum of 2 vaccinations in a lifetime) is recommended.
References
A yellow fever outbreak occurred in Ghana in October 2021. The following regions are affected: Savannah, Upper West (in the northwest), Bono (in the center), and Oti (in the east). Of approximately 600 clinical cases, 102 laboratory-confirmed cases and 46 deaths have been reported.
Consequences for travelers
Vaccination against yellow fever is mandatory for traveling to Ghana.
References
Das «Center for Disease Control and Prevention» (CDC) hat ganz Indien als Land mit einer aktuellen Zika-Epidemie eingestuft, wobei der Ausbruch hauptsächlich in Uttar Pradesh stattfindet. Seit Oktober 2021 wurden 109 bestätigte Fälle gemeldet. Wie in früheren Nachrichten berichtet, wurden auch in anderen Teilen Indiens (Kerala, Maharasthra) Zika-Fälle registriert.
Das Zika-Virus wird v.a. von Mücken übertragen, die tagsüber stechen und in vielen tropischen Regionen vorkommen. Etwa 80% der Infektionen verlaufen asymptomatisch. Die klinischen Symptome sind in der Regel nicht schwerwiegend und dauern zwischen 5 und 7 Tagen: Fieber, roter Hautausschlag (Rash) mit Juckreiz, Gelenkschmerzen, Bindehautentzündung (rote Augen), manchmal Kopf- und Muskelschmerzen. Es kann zu neurologischen (Guillain-Barré-Syndrom) und immunologischen Komplikationen kommen. Es gibt keinen Impfstoff und keine spezifische Therapie gegen das Zika-Virus. Eine besondere Situation besteht für schwangere Frauen, da ein Risiko schwerer Missbildungen beim ungeborenen Kind besteht.
Folgen für Reisende
Aktuell besteht ein erhöhtes Übertragungsrisiko für das Zika-Virus in Indien. Beachten Sie, dass das Zika-Virus auch sexuell übertragen werden kann! Prävention: Optimaler Mückenschutz 24/7: Tagsüber gegen Zika, Dengue und andere Arbovirosen, in der Dämmerung und nachts gegen Malaria.
Bei Reisen in Gebieten mit einem Zika Ausbruch, wie dies in Indien nun der Fall ist, empfiehlt das Schweizerische Expertenkomitee für Reisemedizin während der Reise und mindestens 2 Monate nach der Rückkehr ein Kondom/Femidom zu verwenden, um eine mögliche sexuelle Übertragung des Virus zu verhindern.
Wegen des Risikos für Fehlbildungen beim ungeborenen Kind wird schwangeren Frauen derzeit davon abgeraten, nach Indien zu reisen. Bei unbedingt notwendigen Reisen wird empfohlen, vor der Abreise mit einem Facharzt für Reisemedizin zu sprechen.
Frauen, die planen, schwanger zu werden, sollten nach ihrer Rückkehr (oder der des Partners) aus Indien mindestens 2 Monate mit der Familienplanung abwarten. Im Falle einer medizinisch unterstützten Fortpflanzung sollte dieser Zeitraum auf mindestens 3 Monate verlängert werden. Lesen Sie auch das Informationsblatt Zika, insbesondere wenn Sie schwanger sind oder Sie oder Ihre Partnerin eine Schwangerschaft planen.
Referenzen
CDC Travel News, 9.12.2021, ECDC 13.11.2021, EKRM statement 2019
In den letzten vier Wochen wird ein Anstieg der Malariafälle in der Nordzone (Gemeinden Medio Queso, San Gerardo, Cuatro Esquinas, Isla Chica, La Trocha, Las Delicias und Coquital) beobachtet. Bis zum 27.11.2021 wurden 138 Fälle registriert. Nachdem in den Jahren 2013-2015 keine lokal erworbenen Fälle in Costa Rica registriert wurden, kommt es seit 2016 wieder zu vermehrten Meldungen von lokal erworbenen Malariafällen, wobei die Anzahl pro Jahr jedoch unter 100 Fällen blieb.
Malaria wird abends und nachts durch Mücken übertragen. Die Symptome der Erkrankung sind Fieber >37,5° C, Schüttelfrost, Kopfschmerzen und Grippesymptome sowie gelegentlich Durchfall. Die Krankheit ist potenziell tödlich und stellt einen medizinischen Notfall dar!
Folgen für Reisende
Optimaler Mückenschutz 24/7 (in der Dämmerung und nachts gegen Malaria, tagsüber gegen Dengue, Chikungunya und andere Arbovirosen). Bei Fieber >37.5° C sollte immer an eine Malaria gedacht und diese mittels Blutuntersuchung ausgeschlossen werden.
Referenzen
Outbreak News Today, 4.12.2021, Ministerio de Saude, 3.12.2021
In Queensland, the number of cases with Ross River Virus (RRV) infections is increasing, with over 150 people tested positive on the Sunshine Coast. Due to rainfall and the associated increase in the mosquito population, more people are expected to become ill in the coming weeks.
Ross River virus disease is the most common mosquito-borne infectious disease in Australia; it occurs throughout of the country but is found primarily in Queensland, Victoria, and Western Australia. Transmission occurs through Culex and Aedes mosquitoes. After an acute phase with fever, skin rash, and joint pain, RRV can sometimes cause long-lasting pain in various joints (polyarthritis).
Consequences for travelers
Optimal mosquito protection is recommended around the clock (24/7) (see factsheet mosquito and tick bite protection). There is neither a specific medication nor a vaccination.
References
According to the WHO, more than 200 suspected cases of yellow fever infection were reported between Oct. 15th and Nov. 27th, 2021, of which 70 cases were laboratory-confirmed. The number of deaths has risen to at least 40. Yellow fever was likely introduced into the region by nomads from Nigeria who moved into Savannah region of Ghana. At least 8 regions are now affected by the outbreak, including tourist areas. A vaccination campaign and further investigations have been initiated.
Consequences for travelers
Vaccination against yellow fever is strongly recommended for all travelers. Proof of yellow fever vaccination is mandatory upon entry.
References
According to media reports, seven people have died in Zanzibar after eating turtle meat; three people are still being treated in hospital.
Turtle meat is a popular delicacy among residents. In rare cases, turtle meat can be toxic due to a biotoxin called chelonitoxism. Symptoms include nausea, vomiting, dysphagia, and abdominal pain. Severe cases can lead to coma and multiple organ failure.
Consequences for travelers
Refrain from consuming the meat of sea turtles! It is prohibited in most countries due to conservation efforts!
References
According to media reports, malaria cases in Limpopo province have doubled from 206 to over 400 cases in two weeks. The districts Vhembe and Mopani are most affected. Authorities expect a further increase in malaria cases during the rainy season in the coming weeks.
Consequences for travelers
Optimal mosquito protection is necessary at dusk and at night in the north/northeast of the country. In addition, from September to May, the use of chemoprophylaxis against malaria is recommended for stays in the high-risk areas (northeast and east of Mpumalanga Province, incl. Kruger & neighboring parks, as well as north and northeast of Limpopo Province.).
References
Between October 8th and November 11th, 2021 86 cases of dengue fever infections were registered in the district of Richard Tol, Saint Lois region. So far, Dengue virus serotypes 1 and 3 (DENV 1 and DENV 3) have been reported.
Dengue is endemic in Africa. The exact extent of its spread on the African continent is unclear, as a diagnosis is often not made and epidemiological surveillance is poor.
Consequences for travelers
Protect yourself optimally around the clock (24/7) against mosquitoes (see factsheet mosquito and tick bite protection): during the day against dengue, chikungunya, Zika and other viruses, at dusk and at night against malaria. If you should have a fever: take medication containing the ingredient paracetamol and make sure you drink enough fluids. Do not take any medication containing the ingredient acetylsalicylic acid (e.g. Aspirin®), as this can increase the bleeding tendency in the event of a dengue infection (see also factsheet dengue). If you have visited a malaria area and have a fever >37.5 °C, you should always exclude malaria by taking a blood smear on the spot. Visit a medical facility for this (see also factsheet malaria).
References
(source image: PAHO Zika weekly report, accessed 19.11.2021) The high incidence in Guatemala compared to the other countries is striking. However, these numbers need to be interpreted with caution, as epidemiological surveillance may be limited due to the COVID-19 pandemic. Case numbers in the Caribbean are incomplete, see link for details.
Consequences for travelers
Currently, none of the above countries is classified as an area with a current outbreak (see CDC map). Prevention: Optimal mosquito protection is necessary around the clock (24/7): during the day against dengue, chikungunya, Zika and other viruses, at dusk and at night against malaria. If you should have a fever: take medication containing the ingredient paracetamol and make sure you drink enough fluids. Do not take any medication containing the ingredient acetylsalicylic acid (e.g. Aspirin®), as this may increase the risk of bleeding in the event of a dengue infection (see also factsheet dengue). If you have visited a malaria area and have a fever >37.5 °C, you should always exclude malaria by taking a blood smear on the spot. Visit a medical facility for this (see also factsheet malaria). Detailed information on Zika can be found in the Zika factsheet.
References
PAHO Zika weekly report, accessed 19.11.2021
According to media reports, at least 80 fishermen have fallen ill with an unclear skin disease in the suburbs of Dakar. Already, in 2020 several hundred fishermen in Senegal were affected by an unclear vesicular, highly itchy skin affliction, which was accompanied by fever and had occurred after returning from the sea (incubation period of several days). Close contacts, such as family members, were not affected at that time. Images of skin disease 2020 (source image: AFRIK.COM, 20.11.2021):
Consequences for travelers
Very likely low risk for travelers. For information, follow current media reports. In case of unclear skin symptoms after contact with seawater, consult a physician.
References
A person in Maryland, USA, has contracted monkeypox after a stay in Nigeria. Laboratory tests revealed that it is the same strain that has been circulating in Nigeria since 2017. The person is currently in isolation. Investigations regarding possible contacts have been initiated.
Monkeypox is endemic in Nigeria and other countries in West and Central Africa. An increase in cases in Nigeria has been recorded since September 2017. 88 cases have been reported in 2021 (through the end of October 2021).
Consequences for travelers
Prevention: Follow good personal hygiene, avoid contact with infected people and animals, do not consume bushmeat. The individual risk of contracting monkeypox from an infected patient depends on the type and duration of contact. If there is very close contact with a case (e.g., family members, airplane neighbors, medical personnel), the risk of infection is considered to be moderate, otherwise low.
References
The Beijing Olympic and Paralympic Games are scheduled for February 4-20 and March 4-13, 2022, respectively. About 3,000 athletes from 80 countries are expected. The competitions will be held in Beijing, Yanqing, Zhangjiakou, and the Hebei province.
According to current regulations, international spectators are not allowed to attend. Local spectators will be allowed to attend the Games; information on additional conditions is still pending.
Consequences for travelers
If considering a visit, the following precautions are recommended:
General:
Recommended vaccinations:
References
Diverse. Olympische Spiele, Bejing 2022
Diphtheria cases were reported in four countries in 2021:
Dominican Republic: A total of 56 suspected diphtheria cases were reported between week 1 and 42 in 2021, of which 18 were confirmed (14 by laboratory testing and 4 by epidemiologic investigation), including 12 confirmed deaths. Regarding other cases: 31 of the total reported in 2021 were discarded, one was classified as probable, and 6 remain under investigation.
Haiti: A sustained diphtheria outbreak has been ongoing since 2014 (over >1,300 suspected cases). In 2021 (week 1-38), the number of suspected cases reported (164 cases) is similar to the number reported in the same period in 2019 (165 cases), although higher than the number of suspected cases reported in the same period in 2020 (110 cases).
Colombia: 7 suspected diphtheria cases were reported between week 1 and 41 (2021), of which 1 was laboratory-confirmed, 5 cases were excluded, and 1 case is still under investigation.
Brazil: 1 diphtheria case
The WHO Americas Region has seen a steady decline in vaccination coverage against diphtheria since 2010. The coverage rate for the third dose of diphtheria, tetanus, and pertussis (DTP3) vaccine in the Americas Region declined from 94% to 84% between 2010 and 2020. In addition, the COVID-19 pandemic has also affected epidemiologic and laboratory surveillance systems for vaccine-preventable diseases.
Consequences for travelers
A booster vaccination against diphtheria (together with tetanus) is necessary in addition to a basic immunization. The optimal time for the booster vaccination for stays in areas with a diphtheria epidemic is unclear. Travelers to countries with diphtheria outbreaks should receive a booster vaccination if the previous booster vaccination is more than 10 years old, as the diphtheria protection is shorter-lasting than the tetanus protection. For high-risk individuals, such as those on humanitarian missions, a shorter interval (e.g., 5 years) should be considered.
References
Forty-two suspected cases of yellow fever (YF) were reported between October 15th, 2021, and November 3rd, 2021. Infection was proven by PCR at least in three blood samples collected from suspected cases.
The cases occurred primarily amongst nomadic settlers from the two districts of West Gonja and North Gonja in the Savannah region of northwestern Ghana (bordering Côte d'Ivoire). Eleven of the 42 suspected cases, including all three PCR-positive cases, died.
Consequences for travelers
Yellow fever is endemic in Ghana. The last outbreak was in 2016. The current outbreak once again emphasizes the importance of a yellow fever vaccination when staying in Ghana. Proof of a yellow fever vaccination is required upon entry into Ghana.
References
More than 1.1 million cases of typhoid fever have been reported from the beginning of the year (2021) until the end of September, including 19,734 confirmed cases and 411 deaths. This is a significant increase compared to 2020 (total 715,920 suspected cases, 178 deaths). These figures should be interpreted with caution because bacterial cultures are not usually possible and the test used in most cases (Widal test) is not very sensitive and specific for the diagnosis of typhoid fever.
Consequences for travelers
Maintain optimal food and drinking water hygiene. Vaccination against typhoid fever is recommended especially for people visiting friends and relatives (VFRs) and for people traveling with poor hygienic conditions.
References
Ukrainian health officials report a polio case in an unvaccinated 12-year-old child with acute flaccid paralysis from Transcarpathia (southwest of the country) in a new report on the current polio situation in Ukraine. There is no information yet regarding the type of polio.
An epidemiological investigation was conducted after this case was reported. No further person was found to be infected with the poliovirus. The previously detected cVDPV2 cases in Ukraine in the Rivne region are not connected to the current case.
Consequences for travelers
Ukraine is now considered a category 2 in the WHO temporary poliomyelitis vaccination recommendations ("States infected with cVDPV2, with or without evidence of local transmission"):
References
India, Delhi: Health authorities in Delhi have reported 531 additional dengue fever cases in one week, bringing the total number of cases in the city to over 1,500. This is the highest number of reported cases since 2018, with over 46,000 cases recorded in India, which now ranks second in the world after Brazil (60,000 cases). According to media reports, this sharp increase in dengue fever cases has led to a shortage of hospital beds in both government and private hospitals.
Consequences for travelers
Optimal mosquito protection measures 24/7: during the day against dengue, chikungunya, Zika and other viruses, at dusk and at night against malaria. If you should have a fever: take medication containing the ingredient paracetamol and make sure you drink enough fluids. Do not take any medication containing the ingredient acetylsalicylic acid (e.g. Aspirin®), as this may increase the risk of bleeding in the event of a dengue infection (see also factsheet dengue). If you have visited a malaria area and have a fever >37.5 °C, you should always exclude malaria by taking a blood smear on the spot. Visit a medical facility for this (see also factsheet malaria).
References
Outbreak News Today, 1.11.2021, Outbreak News Today, 23.10.2021
More than 23,000 dengue cases (including 89 deaths) have been recorded since the beginning of 2021, with the majority of cases (20,000) reported in Dhaka.
Consequences for travelers
Optimal mosquito protection measures 24/7: during the day against dengue, chikungunya, Zika and other viruses, at dusk and at night against malaria. If you should have a fever: take medication containing the ingredient paracetamol and make sure you drink enough fluids. Do not take any medication containing the ingredient acetylsalicylic acid (e.g. Aspirin®), as this may increase the risk of bleeding in the event of a dengue infection (see also factsheet dengue). If you have visited a malaria area and have a fever >37.5 °C, you should always exclude malaria by taking a blood smear on the spot. Visit a medical facility for this (see also factsheet malaria).
References
Outbreak News Today, 1.11.2021, Outbreak News Today, 23.10.2021
Diphtheria bacteria were detected in three people in the Ky Son district in the Huu Lap commune (northwest of the country).
Consequences for travelers
A booster vaccination is necessary in addition to a basic immunization against diphtheria (together with tetanus, etc.). The optimal time for the booster vaccination for stays in areas with a diphtheria epidemic is unclear. Travelers to countries with diphtheria outbreaks should receive a booster vaccination if the previous booster vaccination is more than 10 years old, as the diphtheria protection is shorter-lasting than the tetanus protection. For high-risk individuals, such as those on humanitarian missions, a shorter interval (e.g., 5 years) should be considered. Please talk to your doctor if you belong to this group.
References
Outbreak News Today, 27.10.2021, Outbreak News Today, 23.10.2021
In the district of Ghaziabad in the state of Uttar Pradesh, 13 diphtheria cases were registered until October 2021, compared to 14 cases in the entire 2020.
Consequences for travelers
A booster vaccination is necessary in addition to a basic immunization against diphtheria (together with tetanus, etc.). The optimal time for the booster vaccination for stays in areas with a diphtheria epidemic is unclear. Travelers to countries with diphtheria outbreaks should receive a booster vaccination if the previous booster vaccination is more than 10 years old, as the diphtheria protection is shorter-lasting than the tetanus protection. For high-risk individuals, such as those on humanitarian missions, a shorter interval (e.g., 5 years) should be considered. Please talk to your doctor if you belong to this group.
References
Outbreak News Today, 27.10.2021, Outbreak News Today, 23.10.2021
In Ernakulam district, Kerala state, the number of confirmed leptospirosis cases have continued to increase in October 2021 (now 29 confirmed cases and 48 suspected cases) compared to September 2021 (18 confirmed 51 suspected cases). Since the beginning of 2021, 304 suspected cases have been reported in Ernakulam (confirmed: 133 cases).
Monsoon-related flooding occurs regularly between June and September, with October and November constituting the post-monsoon season. As a result, outbreaks of leptospirosis are common during this period.
Consequences for travelers
Wear protective clothing/boots when wading through water! Leptospira are transmitted through the urine of rodents (mainly rats), which can contaminate small bodies of water (creeks, puddles, etc.) and mud. Transmission to humans occurs through small skin lesions or mucosal contacts through direct or indirect contact with the rodent urine. Symptoms range from flu-like symptoms, aseptic meningitis to sepsis. Vaccination is not generally available.
References
The 'Pan American Health Organization' (PAHO) has reported 122,203 chikungunya fever cases in the Americas in the year 2021, compared to 103,000 cases reported for the entire year of 2020. Brazil accounts for the majority of cases (97%).
Chikungunya fever is a viral infection transmitted by Aedes mosquitoes. The disease is typically manifested by severe joint pain in the hands and feet, which can last for weeks or months in some patients.
Consequences for travelers
Optimal mosquito protection measures 24/7: during the day against dengue, chikungunya, Zika and other viruses, at dusk and at night against malaria. If you should have a fever: take medication containing the ingredient paracetamol and make sure you drink enough fluids. Do not take any medication containing the ingredient acetylsalicylic acid (e.g. Aspirin®), as this may increase the risk of bleeding in the event of a dengue infection (see also factsheet dengue). If you have visited a malaria area and have a fever >37.5 °C, you should always exclude malaria by taking a blood smear on the spot. Visit a medical facility for this (see also factsheet malaria).
References
According to WHO, three laboratory-confirmed cases of circulating vaccine-derived poliovirus type 2 (cVDPV2) were reported in the Biombo and Bissau regions on October 26, 2021. The most recent date of symptom onset was July 15, 2021. The detected cVDPV strain is genetically linked to a strain circulating in Nigeria. cVDPV had not previously been detected in Guinea-Bissau.
Consequences for travelers
Guinea-Bisseau is now considered as category 2 of the WHO temporary poliomyelitis vaccination recommendations ("States infected with cVDPV2, with or without evidence of local transmission"):
References
Over 120 cases of salmonella have been reported since 2019 in Germany (68 cases), Sweden (37 cases), Norway (5 cases), Denmark (9 cases), and the Netherlands (2 cases). Cases have also been reported in the United States and Canada. The salmonella outbreak is linked to sesame products (tahini and halva) imported from Syria. Fourteen batches have tested positive for one or more of the Salmonella-outbreak strains. Tahini is a paste made from raw sesame seeds. Halva is a confectionery product that contains a high percentage of sesame seeds.
The recurrent occurrence of cases and the repeated discovery of positive samples since 2019 indicate that contaminated sesame-based products have been circulating in the EU market for more than two years.
Consequences for travelers
Considering the limited information on the production and distribution of the sesame products from Syria, there is still a risk of new salmonella infections in the EU/European Economic Area. Caution should be shown when consuming these products (tahini, halva).
References
In the Punjab province, cases of dengue infections are increasing significantly, with more than 300 cases per day. Between January and October 76th, 2021, 5’700 infections have been recorded in the province, including 18 deaths. All four dengue virus strains are circulating (DENV-1, DENV-2, DENV-3, and DENV-4).
Consequences for travelers
Optimal mosquito protection is necessary around the clock (24/7) (Daytime risk: Dengue, Zika, Chikungunya, etc.; Dusk / nighttime risk: Malaria). Dengue fever is transmitted in urban areas. In case of fever, fever-reducing medications containing paracetamol should be favored, as well as hydration. Do not take fever-reducing medications containing acetylsalicylic acid (e.g., Aspirin ®), as they increase the risk of bleeding. For travelers staying in regions with malaria risk, a malaria infection should always be excluded in the case of fever.
References
The Minister of Health declared a health emergency on the 10th of October (2021) for 51 districts in 15 regions in Peru due to a dengue fever outbreak. The affected regions are Piura, San Martín, Loreto, Huánuco, Junín, Cajamarca, Cusco, Madre de Dios, Ayacucho, Lima, Amazonas, Ucayali, Pasco, Tumbes and Ica. The health emergency is expected to last 90 days and is intended to prevent and control the dengue outbreak. 36’000 dengue fever infections have been registered since January 2021, which corresponds to an incidence rate of 111 infections per 100’000 inhabitations. The current incidence rate and number of cases are significantly higher than the previous three years.
Consequences for travelers
Optimal mosquito protection is necessary around the clock (24/7) (Daytime risk: Dengue, Zika, Chikungunya, etc.; Dusk / nighttime risk: Malaria). Dengue fever is transmitted in urban areas. In case of fever, fever-reducing medications containing paracetamol should be favored, as well as hydration. Do not take fever-reducing medications containing acetylsalicylic acid (e.g., Aspirin ®), as they increase the risk of bleeding. For travelers staying in regions with malaria risk, a malaria infection should always be excluded in the case of fever.
References
Outbreak News Today, 11.10.2021, MoH Peru, Epid. Bulletin, KW 40, 2021
Two hundred cases of schistosomiasis and diarrhea have been reported in children due to drinking contaminated water from pools and rivers in the Boni forest (Garissa district) in eastern Kenya, a region threatened by Al Sahab terrorism. Boni residents have been forced to drink untreated, dirty water as their water sources have dried up due to a devastating drought.
Consequences for travelers
Avoid all contact with freshwater, especially bathing and wading near the shore and drinking untreated drinking water. Bathe only in chlorinated pool water and in the ocean (saltwater), as this does not pose a risk in regards to schistosomiasis infections. A schistosomiasis infection should be ruled out after possible exposure.
For more information: see HealthyTravel: Factsheet Schistosomiasis
References
In der Provinz North-Kivu wurde ein neuer, im Labor bestätigter Fall mit einer Ebola-Virus-Infektion festgestellt. Es handelt sich dabei um ein 3-jähriges Kind, welches Anfang Oktober erkrankte. Nachbarn des erkrankten Kindes (2 Kinder und deren Vater) waren bereits Mitte bzw. Ende September an Ebola verdächtigen Symptome verstorben, eine Labordiagnose wurde jedoch nicht gestellt. Inzwischen wurde ein weiterer Fall in der Stadt Beni bestätigt.
Am 3. Mai war der Ebola Ausbruch in der Nort Kivu Provinz erst als beendet erklärt worden.
Ebolafieber ist eine virale, hämorrhagische, äusserst virulente Krankheit. Sie wird durch direkten Kontakt mit Körperflüssigkeiten und -ausscheidungen einer erkrankten Person (Blut, Speichel, Erbrochenes, Stuhl, Schweiss, Sperma, Urin usw.) oder mit infizierten Tieren (v. a. Affen, Antilopen, Nagern, Fledermäuse) übertragen. Die Symptome sind plötzliches hohes Fieber, Muskelschmerzen, Müdigkeit, Hals- oder Kopfschmerzen, gefolgt von Durchfall, Erbrechen und innerlichen und äusserlichen Blutungen. Eine frühzeitige Hospitalisierung mit unterstützender Pflege (Hydratation, Erhaltung eines normalen Blutdrucks) kann die Prognose verbessern.
Folgen für Reisende
Das Risiko einer Ebola-Infektion besteht für Personen, die in das Ausbruchsgebiet reisen, bei engem, ungeschütztem Kontakt mit einer an Ebola erkrankten oder verstorbenen Person (und deren Körperflüssigkeiten) sowie bei ungeschütztem Geschlechtsverkehr mit einem Ebola-Patienten oder Überlebenden (12 Monate). Es wird empfohlen, sich regelmäßig die Hände zu waschen und zu desinfizieren (insbesondere vor dem Berühren der Augen, der Nase und des Mundes, nach dem Umgang mit potenziell kontaminierten Gegenständen und nach dem Toilettengang) sowie den Kontakt mit einem möglicherweise infizierten Tier zu vermeiden und kein Buschfleisch zu essen. Bei humanitären Einsätzen wird empfohlen, einen Spezialisten für Reisemedizin zu konsultieren.
Referenzen
Das ukrainische Gesundheitsministerium meldet einen Fall von akuter schlaffer Lähmung verursacht durch das Poliovirus. Es handelt sich dabei um ein ungeimpftes 18 Monate altes Mädchen aus der Oblast Rivne im Nordwesten des Landes. Die Eltern hatten die Impfung aufgrund religiöser Überzeugungen abgelehnt. Auch bei 6 Kontaktpersonen wurde das Virus gefunden. Die Durchimpfungsrate gegen Polio ist in der Bevölkerung sehr gering.
Polio wird durch Wasser oder verunreinigte Nahrungsmittel übertragen und kann bleibende, invalidisierende Lähmungen verursachen. Es gibt keine Behandlung, aber die Impfung ist ein wirksames Mittel zur Vorbeugung der Krankheit.
Folgen für Reisende
Personen, die sich > 4 Wochen im Land aufhalten, wird dringend empfohlen, bei Ausreise aus der Ukraine eine mind. 4 Wochen und max. 12 Monate zurückliegende Polio-Auffrischimpfung mit Dokumentation im internationalen Impfausweis zu haben. Bei Aufenthalten < 4 Wochen: Grundimmunisierung und Auffrischimpfung alle 10 Jahre.
Referenzen
Polioeradication (accessed 14.10.2021)
Seit Jahresbeginn 2021 wurden in Peru insgesamt 14 Fälle von Gelbfieber gemeldet, von denen 10 bestätigt wurden. Die Betroffenen waren nicht gegen Gelbfieber geimpft.
Gelbfieber ist eine hämorrhagische, virale Krankheit und wird durch Mücken übertragen. Sie beginnt mit hohem Fieber, Schüttelfrost, Muskel- und Kopfschmerzen und Verdauungsstörungen und kann bei gewissen Patienten zu Blutungen und Gelbsucht führen, die tödlich sein können. Es gibt keine spezifische Therapie, die Impfung ist das beste Mittel, sich vor dieser Krankheit zu schützen. Nicht geimpfte Personen (bei Kontraindikation) müssen sich unbedingt gegen Mückenstiche schützen. Für Kinder unter 9 Monaten, Schwangere, Stillende und Personen mit schwerer Immunschwäche oder Thymus Krankheiten, wird eine Zuweisung zu einem Spezialisten in Reise- und Tropenmedizin empfohlen.
Folgen für Reisende
Ein Impfschutz gegen Gelbfieber wird bei Aufenthalten in Gebieten die unter 2’300m östlich der Anden liegen empfohlen (nicht für Aufenthalte in Cusco, Lima, Machu Picchu und für den Inca Trail).
Referenzen
Seit September 2017 besteht ein Gelbfieberausbruch in Nigeria. Seit Jahresanfang 2021 und bis Ende August wurden insgesamt 1’312 Verdachtsfälle registriert.
Gelbfieber ist eine hämorrhagische, virale Krankheit und wird durch Mücken übertragen. Sie beginnt mit hohem Fieber, Schüttelfrost, Muskel- und Kopfschmerzen und Verdauungsstörungen und kann bei gewissen Patienten zu Blutungen und Gelbsucht führen, die tödlich sein können. Es gibt keine spezifische Therapie, die Impfung ist das beste Mittel, sich vor dieser Krankheit zu schützen. Nicht geimpfte Personen (bei Kontraindikation) müssen sich unbedingt gegen Mückenstiche schützen. Für Kinder unter 9 Monaten, Schwangere, Stillende und Personen mit schwerer Immunschwäche oder Thymus Krankheiten, wird eine Zuweisung zu einem Spezialisten in Reise- und Tropenmedizin empfohlen.
Folgen für Reisende
Eine Impfung gegen Gelbfieber ist bei Aufenthalten in diesem Land obligatorisch und muss in einem offiziellen Impfzentrum (oder von einem zugelassenen Arzt) durchgeführt werden und spätestens 10 Tage vor Einreise erfolgt sein, damit ein Schutz gewährleistet ist. Bei immunkompetenten Personen ist eine Gelbfieberimpfung mit einer einmaligen Auffrischimpfung nach 10 Jahren (d. h. maximal 2 Impfungen im Leben) empfohlen.
Zwischen Ende August und Mitte September 2021 wurden insgesamt 20 Verdachtsfälle und 22 bestätigte Fälle von Pest (19 Lungenpest Fälle, 3 Beulenpestfälle) gemeldet. Die gemeldeten Fälle befinden sich in zwei nicht benachbarten Regionen: Itasy und Haute Matsiatra. Beide Regionen sind als Pest-Endemiegebiete bekannt.
Die Pest ist auf Madagaskar endemisch, die Hauptübertragungszeit findet zwischen September und April statt. Jedes Jahr werden 200-700 Fälle gemeldet, hauptsächlich die Beulenpestform. 2017 gab es einen großen Ausbruch mit v. a. Lungenpest.
Die Pest wird durch Bakterien (Yersinia pestis) verursacht und durch Flöhe von Nagetieren (vor allem Ratten) oder auch Haustieren übertragen. Es gibt die sogenannte Beulen (Bubonen)-Pest und die seltener auftretende systemische (Pestsepsis) und Lungenpest. Letztere wird von Mensch zu Mensch über Tröpfchen über die Atemwege von Patienten mit Lungenpest übertragen. Diese Form ist äußerst ansteckend. Symptome der Lungenpest sind neben Fieber vor allem Lungenbeschwerden wie Brustschmerzen, Atemnot und Husten. Eine Antibiotikatherapie muss innerhalb von 24 Stunden nach Beginn der Symptome begonnen werden. Die Bubonenpest äussert sich durch Fieber, Schüttelfrost und Grippesymptome (Kopf-, Muskel- und Halsschmerzen) und oft eine Schwellung der Lymphdrüsen (Beulen).
Folgen für Reisende
Das Risiko für Reisende ist sehr gering. Schützen Sie sich vor Flöhen, in dem Sie regelmässig Repellentien auftragen und Permethrin imprägnierte Kleidung tragen. Vermeiden Sie Kontakt mit Ratten und toten oder kranken Tieren, sowie erkrankten Personen. Konsultieren Sie bei Fieber, schmerzhaften Lymphknoten und/oder Atembeschwerden rasch einen Arzt.
Referenzen
Laut Medienberichten wurde bis Anfang Oktober bei sieben Personen in Venezuela eine Gelbfieberinfektion festgestellt. Die Fälle traten in den Bundestaaten Monagas und Anzoategui auf. Die Durchimpfungsrate gegen Gelbfieber ist in der Bevölkerung von Venezuela ungenügend. Aufgrund der politischen Lage ist die medizinische Infrastruktur eingeschränkt.
Gelbfieber ist eine hämorrhagische, virale Krankheit und wird durch Mücken übertragen. Sie beginnt mit hohem Fieber, Schüttelfrost, Muskel- und Kopfschmerzen und Verdauungsstörungen und kann bei gewissen Patienten zu Blutungen und Gelbsucht führen, die tödlich sein können. Es gibt keine spezifische Therapie, die Impfung ist das beste Mittel, sich vor dieser Krankheit zu schützen. Nicht geimpfte Personen (bei Kontraindikation) müssen sich unbedingt gegen Mückenstiche schützen. Für Kinder unter 9 Monaten, Schwangere, Stillende und Personen mit schwerer Immunschwäche oder Thymus Krankheiten, wird eine Zuweisung zu einem Spezialisten in Reise- und Tropenmedizin empfohlen.
Folgen für Reisende
Ein Impfschutz gegen Gelbfieber wird bei Aufenthalten in den meisten Bundesstaaten von Venezuela, einschliesslich Monangas und Anzoategui dringend empfohlen.
Referenzen
Masernausbrüche werden aus mindestens 14 Ländern Afrikas berichtet mit einigen Hundert bis mehreren Tausend Fällen seit Jahresbeginn 2021.
Masern sind eine hoch ansteckende Viruserkrankung, die über die Atemwege übertragen wird. Sie ist in der ganzen Welt verbreitet. Mit einem Impfstoff lässt sich die Krankheit sehr wirksam verhindern.
Folgen für Reisende
Eine Reise bietet eine ideale Gelegenheit, den Schutz vor Masern zu kontrollieren (2x geimpft oder durchgemachte Masern) und wenn nötig den Impfschutz zu aktualisieren.
Referenzen
Seit Jahresanfang 2021 wurden 5 Fälle von humaner Tollwut bekannt und 234 Fälle bei Tieren. Betroffen waren Personen aus allen Landesteilen.
Tollwut kann durch Speichel von infizierten Säugetieren (vor allem Hunden, Katzen, Affen, Fledermäusen) übertragen werden. Durch rasche Behandlung – Wunde unter fliessendem Wasser und mit Seife mindestens 15 Minuten lang ausgiebig waschen und spülen, Immunglobulin und 4 Impfdosen - kann verhindert werden, dass sich die Infektion zur tödlichen Tollwut entwickelt. Immunglobuline und moderne, hoch gereinigte Impfstoffe sind in vielen Regionen nicht erhältlich. Kinder sind besonders gefährdet, da Expositionen häufig unbemerkt erfolgen.
Folgen für Reisende
Kontakt mit Tieren vermeiden (auf keinen Fall füttern!). Nach einem Tierbiss/-kratzer, die Wunde mit fliessendem Wasser und Seife 15 Minuten lang waschen, desinfizieren und in jedem Falle ein qualitativ hochwertiges medizinisches Zentrum aufsuchen (post-expositionelle Impfung). Für Langzeitreisende und Reisende mit erhöhtem Individualrisiko (Reisen mit Zweirädern, in entlegene Gebiete, Langzeitaufenthalte, Kleinkinder, Arbeiten mit Tieren, Höhlenforscher usw.) ist eine prä-expositionelle Impfung vor dem Aufenthalt (2 Injektionen und eine Auffrischimpfung nach 1 Jahr) empfehlenswert.
Referenzen
Outbreak News today, 23.9.2021
Bei einem 18 Monate alten, gegen diese Krankheit nicht geimpften Kind aus dem Dorf Mala im Distrikt Kemo in der Zentralafrikanischen Republik wurde eine Gelbfieberinfektion bestätigt.
Gelbfieber ist eine hämorrhagische, virale Krankheit und wird durch Mücken übertragen. Sie beginnt mit hohem Fieber, Schüttelfrost, Muskel- und Kopfschmerzen und Verdauungsstörungen und kann bei gewissen Patienten zu Blutungen und Gelbsucht führen, die tödlich sein können. Es gibt keine spezifische Therapie, die Impfung ist das beste Mittel, sich vor dieser Krankheit zu schützen. Nicht geimpfte Personen (bei Kontraindikation) müssen sich unbedingt gegen Mückenstiche schützen. Für Kinder unter 9 Monaten, Schwangere, Stillende und Personen mit schwerer Immunschwäche oder Thymus Krankheiten, wird eine Zuweisung zu einem Spezialisten in Reise- und Tropenmedizin empfohlen.
Folgen für Reisende
Eine Impfung gegen Gelbfieber ist bei Aufenthalten in diesen Ländern obligatorisch und muss in einem offiziellen Impfzentrum (oder von einem zugelassenen Arzt) durchgeführt werden und spätestens 10 Tage vor Einreise erfolgt sein, damit ein Schutz gewährleistet ist. Bei immunkompetenten Personen ist eine Gelbfieberimpfung mit einer einmaligen Auffrischimpfung nach 10 Jahren (d. h. maximal 2 Impfungen im Leben) empfohlen.
Referenzen
Am 13. August 2021 wurden im Institut Pasteur in Dakar fünf aus der Côte d’Ivoire stammende Gelbfieberfälle bestätigt.
Gelbfieber ist eine hämorrhagische, virale Krankheit und wird durch Mücken übertragen. Sie beginnt mit hohem Fieber, Schüttelfrost, Muskel- und Kopfschmerzen und Verdauungsstörungen und kann bei gewissen Patienten zu Blutungen und Gelbsucht führen, die tödlich sein können. Es gibt keine spezifische Therapie, die Impfung ist das beste Mittel, sich vor dieser Krankheit zu schützen. Nicht geimpfte Personen (bei Kontraindikation) müssen sich unbedingt gegen Mückenstiche schützen. Für Kinder unter 9 Monaten, Schwangere, Stillende und Personen mit schwerer Immunschwäche oder Thymus Krankheiten, wird eine Zuweisung zu einem Spezialisten in Reise- und Tropenmedizin empfohlen.
Folgen für Reisende
Eine Impfung gegen Gelbfieber ist bei Aufenthalten in diesen Ländern obligatorisch und muss in einem offiziellen Impfzentrum (oder von einem zugelassenen Arzt) durchgeführt werden und spätestens 10 Tage vor Einreise erfolgt sein, damit ein Schutz gewährleistet ist. Bei immunkompetenten Personen ist eine Gelbfieberimpfung mit einer einmaligen Auffrischimpfung nach 10 Jahren (d. h. maximal 2 Impfungen im Leben) empfohlen.
Referenzen
Der Bundesstaat Tamaulipas an der Ostküste Mexikos, der an Texas grenzt, hat Medienberichten zufolge in diesem Jahr bisher 3’407 Abdominaltyphus Infektionen gemeldet. Damit steht Tamaulipas an der Spitze der gemeldeten Fälle in Mexiko, dicht gefolgt vom Bundesstaat Sinaloa (3'381 Fälle).
Abdominaltyphus ist eine bakterielle Erkrankung, die durch kontaminierte Nahrungsmittel und Wasser übertragen wird. Symptome sind Fieber, Bauchschmerzen, Durchfall oder Verstopfung. Antibiotika sind wirksam und eine vorbeugende Impfung ist verfügbar (um die 60% Schutzwirkung).
Folgen für Reisende
Nur gekochte Nahrungsmittel und abgekochte Getränke oder Mineralwasser konsumieren. Je nach Reiseart und Hygienestandard kann eine Impfung empfohlen werden. Sie sollte spätestens 2-3 Wochen vor der Abreise erfolgen.
Referenzen
Laut Medienberichten nimmt die Anzahl der gemeldeten Tollwutfälle bei Hunden in Tema, Region Greater Accra zu: über 115 Tollwut-Verdachtsfälle wurden gemeldet. Auch andere Regionen scheinen eine Zunahme zu verzeichnen. So ist erst kürzlich eine 23-jährige Frau nach einem Hundebiss in Techiman, nördlich von Kumasi, an Tollwut gestorben, sowie zwei kleine Kinder.
Tollwut kann durch Speichel von infizierten Säugetieren (vor allem Hunden, Katzen, Affen, Fledermäusen) übertragen werden. Eine rasche Behandlung – Wunde unter fliessendem Wasser und mit Seife mindestens 15 Minuten lang ausgiebig waschen und spülen, Gabe von Immunglobulinen und insgesamt 4 Impfdosen - kann verhindern, dass sich die Infektion zur tödlichen Tollwut entwickelt. Leider sind hochwertige Tollwutimpfstoffe, insbesondere Immunglobuline in vielen Ländern nicht immer verfügbar. Kinder sind besonders gefährdet, da Expositionen häufig unbemerkt erfolgen.
Folgen für Reisende
Kontakt mit Tieren vermeiden (auf keinen Fall füttern!). Nach einem Tierbiss/-kratzer, die Wunde mit fliessendem Wasser und Seife 15 Minuten lang waschen, desinfizieren und in jedem Falle ein qualitativ hochwertiges medizinisches Zentrum aufsuchen (post-expositionelle Impfung). Für Expatriierte und Reisende mit erhöhtem Individualrisiko (Reisen mit Zweirädern, in entlegene Gebiete, Langzeitaufenthalte, Kleinkinder usw.) ist eine prä-expositionelle Impfung vor dem Aufenthalt (2 Injektionen und eine Auffrischimpfung nach 1 Jahr) empfehlenswert.
Referenzen
Sieben bestätigte und weitere sechs Verdachtsfälle von Leptospirose wurden bei Personen gemeldet, die im Fluss Argensou in Auzat und Vicdessos in Ariege (Südfrankreich) Wassersportaktivitäten wie Canyoning betrieben haben.
Leptospirose ist eine bakterielle Erkrankung, die weltweit vorkommt, besonders häufig in tropischen Ländern während der Regen- oder Überschwemmungszeit. Sie wird bei Kontakt von kleinen Hautverletzungen mit durch Urin verunreinigtem Wasser (v. a. von infizierten Ratten, Hunden, Schweinen, Kühen usw.) übertragen. Das Ansteckungsrisiko erhöht sich beim Campen oder bei Aktivitäten im Zusammenhang mit Wasser (Schwimmen, Kajakfahren, Durchwaten von Wasserläufen). Die Krankheit kann, wenn rechtzeitig diagnostiziert, mit Antibiotika behandelt werden.
Folgen für Reisende
Die französischen Gesundheitsbehörden rufen Personen, die im obengenannten Bereich gebadet oder geangelt haben, dazu auf, beim Auftreten von Symptomen schnell ihren Arzt aufzusuchen.
Referenzen
Via ProMED 12.9.2021, ARS
In einer Tierklinik in Niedersachsen ist ein Hund an Tollwut gestorben. Der Welpe war Anfang September aus dem Mittelmeerraum ohne die vorgeschriebene Tollwutimpfung importiert worden. Post-mortem Tollwutteste fielen positiv aus. Über 50 Kontaktpersonen mussten sich einer post-expositionellen Impfung unterziehen.
Folgen für Reisende
Eine Tollwut-Impfung ist u.a. Voraussetzung für den Import eines Tieres. Der illegale Import von Hunden und anderen Tieren ist ein ernst zunehmendes Problem und gefährdet Mensch und Tier! Bitte halten Sie sich an die Vorschriften.
Referenzen
Tierklinik Posthausen – Facebook, 11.9.2021
Südafrika: Innerhalb einer Woche (23.-31.8.2021) wurden 7 im Labor bestätigte humane Fälle in den Provinzen Limpopo, KwaZulu-Natal und Eastern Cape sowie zusätzlich 3 als wahrscheinlich beurteilte Fälle gemeldet.
Tollwut kann durch Speichel von infizierten Säugetieren (vor allem Hunden, Katzen, Affen, Fledermäusen) übertragen werden. Durch rasche Behandlung – Wunde unter fliessendem Wasser und mit Seife mindestens 15 Minuten lang ausgiebig waschen und spülen, Immunglobulin und 4 Impfdosen - kann verhindert werden, dass sich die Infektion zur tödlichen Tollwut entwickelt. Immunglobuline und moderne, hoch gereinigte Impfstoffe sind in vielen Regionen nicht erhältlich. Kinder sind besonders gefährdet, da Expositionen häufig unbemerkt erfolgen.
Folgen für Reisende
Kontakt mit Tieren vermeiden (auf keinen Fall füttern!). Nach einem Tierbiss/-kratzer, die Wunde mit fliessendem Wasser und Seife 15 Minuten lang waschen, desinfizieren und in jedem Falle ein qualitativ hochwertiges medizinisches Zentrum aufsuchen (post-expositionelle Impfung). Der Zugang zu hochwertigen Tollwutimpfstoffen ist in Südafrika nicht immer gewährleistet! Für Langzeitreisende und Reisende mit erhöhtem Individualrisiko (Reisen mit Zweirädern, in entlegene Gebiete, Langzeitaufenthalte, Kleinkinder usw.) ist eine prä-expositionelle Impfung vor dem Aufenthalt (2 Injektionen und eine Auffrischimpfung nach 1 Jahr) empfehlenswert.
Referenzen
Bolivien: Die Fälle von Hunde- und Katzentollwut haben sich in diesem Jahr in Cochabamba gegenüber dem gleichen Zeitraum des Vorjahres verdoppelt; vier Gemeinden haben den Notstand ausgerufen. Laut Angaben des offiziellen Tollwutprogrammes von Bolivien wurden 2021 bereits 45 Fälle bei Tieren registriert, 4 Personen sind verstorben. Massen-Impfkampagnen für Tiere wurden angekündigt.
Tollwut kann durch Speichel von infizierten Säugetieren (vor allem Hunden, Katzen, Affen, Fledermäusen) übertragen werden. Durch rasche Behandlung – Wunde unter fliessendem Wasser und mit Seife mindestens 15 Minuten lang ausgiebig waschen und spülen, Immunglobulin und 4 Impfdosen - kann verhindert werden, dass sich die Infektion zur tödlichen Tollwut entwickelt. Immunglobuline und moderne, hoch gereinigte Impfstoffe sind in vielen Regionen nicht erhältlich. Kinder sind besonders gefährdet, da Expositionen häufig unbemerkt erfolgen.
Folgen für Reisende
Kontakt mit Tieren vermeiden (auf keinen Fall füttern!). Nach einem Tierbiss/-kratzer, die Wunde mit fliessendem Wasser und Seife 15 Minuten lang waschen, desinfizieren und in jedem Falle ein qualitativ hochwertiges medizinisches Zentrum aufsuchen (post-expositionelle Impfung). Der Zugang zu hochwertigen Tollwutimpfstoffen ist in Bolivien nicht immer gewährleistet! Für Langzeitreisende und Reisende mit erhöhtem Individualrisiko (Reisen mit Zweirädern, in entlegene Gebiete, Langzeitaufenthalte, Kleinkinder usw.) ist eine prä-expositionelle Impfung vor dem Aufenthalt (2 Injektionen und eine Auffrischimpfung nach 1 Jahr) empfehlenswert.
Referenzen
Die Demokratische Republik Kongo hat einen Meningokokken-Meningitis Ausbruch in der nordöstlichen Provinz Tshopo gemeldet, in der mindestens 261 Verdachtsfälle und 129 Todesfälle aufgetreten sind. Die Sterblichkeitsrate ist mit 50 % sehr hoch.
Saisonale Meningitis-Epidemien kommen in Subsahara-Afrika vor allem während der Trockenzeit vor. Im Allgemeinen sind die Serogruppen der Meningokokken A, C, W und X für diese Ausbrüche verantwortlich. Die Krankheit verbreitet sich durch Tröpfchen von Mensch zu Mensch. Falls Symptome (hohes Fieber, starke Kopfschmerzen und Erbrechen) auftreten, sollte sofort ein Arzt konsultiert und mit einer Antibiotikatherapie begonnen werden, da die Krankheit innert Stunden zu lebensbedrohlichen Zuständen führen kann. Als Prophylaxe steht für Erwachsene und Kinder über 1 Jahr eine Impfung gegen die wichtigsten Meningitisstämme zu Verfügung.
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Aufgrund der aktuellen Epidemie wird eine Impfung gegen Meningokokken empfohlen.
Referenzen
Laut Medienberichten wurden zwischen Ende August und Anfang September 30 Verdachtsfälle mit Lungenpest gemeldet, von denen 12 Fälle bestätigt wurden. Sieben Personen verstarben. Die Fälle traten in Itasy, einer in der Nähe der Hauptstadt Antananarivo gelegenen Region im Zentrum des Landes auf.
Die Pest ist auf Madagaskar endemisch, die Hauptübertragungszeit findet zwischen September und April statt. Jedes Jahr werden 200-700 Fälle gemeldet, hauptsächlich die Beulenpestform. 2017 gab es einen großen Ausbruch mit v. a. Lungenpest.
Die Pest wird durch Bakterien (Yersinia pestis) verursacht und durch Flöhe von Nagetieren (vor allem Ratten) oder auch Haustieren übertragen. Es gibt die sogenannte Beulen (Bubonen)-Pest und die seltener auftretende systemische (Pestsepsis) und Lungenpest. Letztere wird von Mensch zu Mensch über Tröpfchen über die Atemwege von Patienten mit Lungenpest übertragen. Diese Form ist äußerst ansteckend. Symptome der Lungenpest sind neben Fieber vor allem Lungenbeschwerden wie Brustschmerzen, Atemnot und Husten. Eine Antibiotikatherapie muss innerhalb von 24 Stunden nach Beginn der Symptome begonnen werden. Die Bubonenpest äussert sich durch Fieber, Schüttelfrost und Grippesymptome (Kopf-, Muskel- und Halsschmerzen) und oft eine Schwellung der Lymphdrüsen (Beulen).
Folgen für Reisende
Das Risiko für Reisende ist sehr gering. Schützen Sie sich vor Flöhen, in dem Sie regelmässig Repellentien auftragen und Permethrin imprägnierte Kleidung tragen. Vermeiden Sie Kontakt mit Ratten und toten oder kranken Tieren, sowie erkrankten Personen. Konsultieren Sie bei Fieber, schmerzhaften Lymphknoten und/oder Atembeschwerden rasch einen Arzt.
Referenzen
Innerhalb einer Woche wurden von den Gesundheitsbehörden in Hongkong drei Fälle mit einer Gelflügelinfluenza (H5N6) gemeldet. Der jüngste Fall betrifft einen 55-jährigen Mann, der in Liuzhou, Guangxi, lebt. Er ist Landwirt und hatte Kontakt mit lebendem Geflügel. Er entwickelte am 17. August Symptome und wurde noch am selben Tag zur Behandlung eingeliefert. Der Zustand des Patienten ist kritisch.
Im Allgemeinen ist das Vogelgrippe Infektionsrisiko für Menschen äusserst gering und kommt fast ausschliesslich bei engem Kontakt mit infiziertem Geflügel (Atemsekrete und Fäkalien) vor.
Folgen für Reisende
Optimale persönliche Hygiene, welche auch im Rahmen der COVID-19 Pandemie wichtig ist. Kontakt mit Geflügel und deren Ausscheidungen sollte vermieden werden. Kein Besuch von Vogel- und Geflügelmärkten/ -farmen.
Referenzen
Laut Medienberichten wurden in der Region Chuvisca, Bundesstaat Rio Grande do Sul, 4 tote Brüllaffen aufgefunden. Bei einem der Affen konnte eine Gelbfieberinfektion bestätigt werden. Die betroffene Region, in denen die toten Affen gefunden wurden, liegt zwischen Porto Alegre und der Grenze zu Uruguay.
Todesfälle bei Affen gehen in Südamerika häufig humanen Gelbfieberfällen voraus und sind damit ein Indikator für eine (vermehrte) Zirkulation von Gelbfieberviren.
Gelbfieber ist eine hämorrhagische, virale Krankheit und wird durch Mücken übertragen. Sie beginnt mit hohem Fieber, Schüttelfrost, Muskel- und Kopfschmerzen und Verdauungsstörungen und kann bei gewissen Patienten zu Blutungen und Gelbsucht führen, die tödlich sein können. Es gibt keine spezifische Therapie, die Impfung ist das beste Mittel, sich vor dieser Krankheit zu schützen. Nicht geimpfte Personen (bei Kontraindikation) müssen sich unbedingt gegen Mückenstiche schützen. Für Kinder unter 9 Monaten, Schwangere, Stillende und Personen mit schwerer Immunschwäche oder Thymus Krankheiten, wird eine Zuweisung zu einem Spezialisten in Reise- und Tropenmedizin empfohlen.
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Die Gelbfieberimpfung wird von der WHO für die meisten Regionen in Brasilien empfohlen. Aufgrund der zunehmenden Ausbreitung auch in bisher als gelbfieberfrei erklärten Gebieten sollte die Indikation für aktuell noch als gelbfieberfreie deklarierte Regionen ebenfalls großzügig gestellt werden (Hauptsaison für Gelbfieber ist Dezember bis Mai)! Empfehlung des Schweizerischen Expertenkomitees für Reisemedizin (EKRM): bei immunkompetenten Personen wird eine Gelbfieberimpfung mit einer einmaligen Zweitimpfung nach 10 Jahren (d. h. maximal 2 Impfungen im Leben) empfohlen.
Referenzen
Am 6. August 2021 wurde die WHO über einen bestätigten Fall mit einer Marburg-Virus-Infektion in der Präfektur Guéckédou, Region Nzérékoré, im Südwesten Guineas informiert. Das Dorf, in dem der Fall auftrat, liegt sowohl in der Nähe der Grenze zu Sierra Leone als auch zu Liberia. Dies ist der erste bekannte humane Fall mit einer Marburg-Virus-Infektion in Guinea. Inzwischen wurde ein zweiter Fall bestätigt; beide Fälle kommen aus Temessadou.
Das Marburg-Virus ist ein dem Ebola-Virus verwandter Erreger, welcher ein sogenanntes hämorrhagisches Fieber auslösen kann. Das Virus wird bei Kontakt mit Blut und anderen Körperflüssigkeiten von Infizierten übertragen. Nach einer Inkubationszeit von 5-10 Tagen treten Symptome mit plötzlichem hohem Fieber, Muskelschmerzen, Müdigkeit, Hals- oder Kopfschmerzen auf, gefolgt von Durchfall, Erbrechen und innerlichen sowie äusserlichen Blutungen, welche meist zum Tod führen. Es gibt weder ein spezifisches Medikament noch eine Impfung. Bisher wurden sporadische Fälle insbesondere aus Uganda, Kenia und D.R. Kongo gemeldet. 2018 wurde das Marburg Virus erstmals in Sierra Leone bei Frucht-Fledermäusen identifiziert, ein Hinweis, dass das Virus auch in West Afrika zirkuliert.
Folgen für Reisende
Das Risiko für Reisende ist sehr gering, für Familienangehörige und Pflegepersonen, die mit Erkrankten Kontakt haben, allerdings gross. Vermeiden Sie Kontakt mit kranken Personen. Konsumieren Sie kein Buschfleisch (bushmeat) oder Fledermäuse. Ebenso sollten Höhlen, die Fledermäuse beherbergen können, gemieden werden. Bei Fieber konsultieren Sie bitte sofort einen Arzt, dies ist auch wichtig um andere Erkrankungen wie z.B. eine Malaria auszuschliessen.
Referenzen
Die griechischen Gesundheitsbehörden haben die ersten drei West-Nil-Fieber Fälle der Saison aus der Region Pella in Zentralmazedonien gemeldet.
West Nil Fieber (WNF) ist eine virale Krankheit (Flavivirus), die in zahlreichen Regionen Europas, Zentralasiens, Nordamerikas und Afrikas durch Stechmücken auf den Menschen übertragen wird. Sie verläuft meist ohne Symptome (80%) oder wie eine Grippe. Selten (< 1 %) kommt es zu neurologischen Störungen oder zu einer Gehirnentzündung mit möglichem tödlichem Ausgang. Ältere Personen, Schwangere und Immunsupprimierte haben ein höheres Risiko für einen schweren Krankheitsverlauf. Es gibt keine spezifische Behandlung.
Folgen für Reisende
Schützen Sie sich gegen Mückenstiche tagsüber und nachts (lange Hosen, langärmlige Kleider, Mückenschutzmittel). Berühren Sie keine erkrankten oder toten Vögel, da diese ebenfalls infiziert sein können. Wenn Sie ein West Nil Fieber Übertragungsgebiet besucht haben, sollten Sie mindestens 28 Tage nach ihrer Rückkehr kein Blut spenden.
Referenzen
Aktuell besteht ein Dengue-Ausbruch (Typ 3) in Mombasa (Januar bis Juni 2021: über 710 Fälle) und Mandera County (52 Fälle, eine hohe Dunkelziffer wird vermutet). In Kenia kommt es seit fünf Jahren jedes Jahr zu Ausbrüchen von Dengue-Fieber.
Dengue Fieber ist eine virale Krankheit, die durch tagaktive Mücken v. a. in den Städten während und kurz nach der Regenzeit übertragen wird. Die Symptome sind hohes Fieber, Kopf-, Gelenk- und Muskelschmerzen und ein Hautausschlag. Die Krankheit verläuft meist gutartig und heilt normalerweise nach 10 Tagen aus. Seltener kann sie zu Blutungen führen.
Folgen für Reisende
Optimaler Mückenschutz 24/7 (in der Dämmerung und nachts gegen Malaria, tagsüber gegen Dengue und andere Arbovirosen. Bei Fieber: Paracetamol-Produkte und Flüssigkeitszufuhr. Keine Medikamente einnehmen die Acetylsalicylsäure (z. B. Aspirin®) enthalten, da diese die Blutungsgefahr erhöhen. Bei Fieber >37,5 °C muss auch an eine Malaria gedacht und diese vor Ort mittels Blutausstrich ausgeschlossen werden (eine medikamentöse Malariaprophylaxe wird neben der Durchführung eines Mückenschutzes unbedingt empfohlen!).
Referenzen
WHO Africa, 11.7.2021
Laut WHO wurden in diesem Jahr 2 Gelbfieberfälle bestätigt: Bei dem ersten Fall handelt es sich um einen 34-jährigen Mann aus der Provinz Nord und beim zweiten Fall um eine 47-jährige, nicht gegen Gelbfieber geimpfte Frau aus der Provinz Bas Uele. Drei weitere Verdachtsfälle aus der Provinz Equateur, Kinshasa und Nord-Ubangi werden noch untersucht.
Gelbfieber ist eine hämorrhagische, virale Krankheit und wird durch Mücken übertragen. Sie beginnt mit hohem Fieber, Schüttelfrost, Muskel- und Kopfschmerzen und Verdauungsstörungen und kann bei gewissen Patienten zu Blutungen und Gelbsucht führen, die tödlich sein können. Es gibt keine spezifische Therapie, die Impfung ist das beste Mittel, sich vor dieser Krankheit zu schützen. Nicht geimpfte Personen (bei Kontraindikation) müssen sich unbedingt gegen Mückenstiche schützen. Für Kinder unter 9 Monaten, Schwangere, Personen mit schwerer Immunschwäche oder Thymus Krankheiten, wird eine Zuweisung zu einem Spezialisten in Reise- und Tropenmedizin empfohlen.
Folgen für Reisende
Eine Impfung gegen Gelbfieber ist bei Aufenthalten in der D.R. Kongo obligatorisch und muss in einem offiziellen Impfzentrum (oder von einem zugelassenen Arzt) durchgeführt werden und spätestens 10 Tage vor Einreise erfolgt sein, damit ein Schutz gewährleistet ist. Bei immunkompetenten Personen ist eine Gelbfieberimpfung mit einer einmaligen Auffrischimpfung nach 10 Jahren (d. h. maximal 2 Impfungen im Leben) empfohlen.
Referenzen
WHO Africa, 25.7.2021
Im Bundesstaat Amapa ist ein 21-jähriger Mann an Gelbfieber verstorben. Der Mann stammte aus dem Staat Pará (Rio Tambaqui do Vieira, in Afua), wo er laut Behörden sehr wahrscheinlich auch die Infektion erworben hatte.
Gelbfieber ist eine lebensbedrohliche virale Erkrankung, die durch Mücken übertragen wird. Es gibt keine spezifische Therapie, jedoch eine sehr wirksame Impfung. Sie ist das beste Mittel, sich vor Gelbfieber zu schützen. Daneben ist ein optimaler Mückenschutz wichtig. Für Kinder unter 9 Monaten, Schwangere, Stillende, Personen mit Immunschwäche oder einer Thymus-Krankheit, die nach Brasilien reisen möchten, empfehlen wir einen Spezialisten in Reise- und Tropenmedizin zu konsultieren.
Folgen für Reisende
Die Impfung gegen Gelbfieber wird von der WHO für die meisten Regionen Brasiliens empfohlen. Seit ein paar Jahren breitet sich Gelbfieber zunehmend auch in bisher gelbfieberfreie Gebiete aus. Auch nicht geimpfte Reisende sind bereits nach einem Aufenthalt in Brasilien gestorben. Das Schweizerische Expertenkomitee für Reisemedizin empfiehlt deshalb einen Gelbfieberimpfschutz für Aufenthalte in allen Gebieten Brasiliens. Die Impfung muss in einem offiziellen Impfzentrum oder von einem dafür zugelassenen Arzt mindestens 10 Tage vor der Einreise nach Brasilien durchgeführt werden, um einen ausreichenden Schutz gegen Gelbfieber zu gewährleisten. Bei immunkompetenten Personen wird eine einmalige Auffrischung nach 10 Jahren empfohlen (d.h. maximal 2 Impfstoffdosen im Leben).
Referenzen
Outbreak News Today, 26.7.2021
China wurde von der Weltgesundheitsorganisation (WHO) als malariafrei zertifiziert. Das Land hat in der Bekämpfung der Malaria innerhalb der letzten 70 Jahre eine bemerkenswerte Leistung erbracht: in den 1940er Jahren wurden landesweit jährlich 30 Millionen Malaria-Fälle gemeldet. Ab den 1950er Jahren wurde eine nationale Malaria-Eliminationsstrategie entwickelt. Die Zertifizierung der Malaria-Eliminierung wird von der WHO erteilt, wenn ein Land nach eingehender Prüfung nachgewiesen hat, dass landesweite Übertragungen für mindestens die letzten drei aufeinander folgenden Jahre unterbrochen wurden. Das Land muss ausserdem nachweisen, dass es in der Lage ist, ein Wiederaufflammen von Übertragungen zu verhindern.
Folgen für Reisende
Auch wenn nun keine spezifische Malaria-Prävention mehr indiziert ist, sollten Mückenschutzmassnahmen weiterhin 24/7 durchgeführt werden: tagsüber gegen Mücken, die z.B. Dengue, Chikungunya und Zika übertragen können und nachts gegen mückenübertragene Erkrankungen wie die Japanische Enzephalitis.
Referenzen
Aus den USA und Kanada werden verschiedene Expositionen gegenüber tollwütigen Tieren gemeldet (Waschbären, Fuchs, eigene Hunde). In allen Fällen konnten die Tiere identifiziert und getötet werden (inkl. Diagnosesicherung) und die exponierten Menschen erhielten eine korrekte postexpositionelle Prophylaxe (PEP) gegen Tollwut.
Tollwut kann durch Speichel von infizierten Säugetieren (vor allem Hunden, Katzen, Affen, Fledermäusen) übertragen werden. Durch eine rasche Behandlung – Wunde unter fliessendem Wasser und mit Seife mindestens 15 Minuten lang ausgiebig waschen und spülen, Gabe von Immunglobulin und 4 aktiven Impfdosen - kann verhindert werden, dass sich die Infektion zur tödlichen Tollwut entwickelt. Immunglobuline und moderne, hoch gereinigte Impfstoffe sind in vielen Regionen nicht erhältlich. Kinder sind besonders gefährdet, da sie häufig Bissen im Gesicht ausgesetzt sind und das Virus nur einen kurzen Weg zurücklegen muss, um das Gehirn zu erreichen bzw. auch kleine Wunden unbemerkt geschehen können.
Folgen für Reisende
Kontakt mit Tieren vermeiden (auf keinen Fall füttern!). Nach einem Tierbiss/-kratzer, die Wunde mit fliessendem Wasser und alkalischer Seife 15 Minuten lang waschen, desinfizieren und in jedem Falle ein qualitativ hochwertiges medizinisches Zentrum aufsuchen (post-expositionelle Impfung). Für Reisende mit erhöhtem Individualrisiko (Reisen mit Zweirädern, in entlegene Gebiete, Langzeitaufenthalte, Kleinkinder, Höhlenforscher, Kontakt mit Tieren / Fledermäuse etc.) empfiehlt das Schweizerische Expertenkomitte für Reisemedizin eine prä-expositionelle Impfung vor der geplanten Reise (2 Injektionen und eine Auffrischimpfung nach 1 Jahr).
Referenzen
Outbreak News Today; via ProMED-mail
In Kolumbien ist ein junger Mann im Departement Huila, im Südwesten des Landes an Tollwut verstorben. Weitere Informationen sind nicht bekannt. Letzten September war im gleichen Departement eine 26-jährige Frau nach einem Biss durch ihre Hauskatze verstorben.
Tollwut kann durch Speichel von infizierten Säugetieren (vor allem Hunden, Katzen, Affen, Fledermäusen) übertragen werden. Durch eine rasche Behandlung – Wunde unter fliessendem Wasser und mit Seife mindestens 15 Minuten lang ausgiebig waschen und spülen, Gabe von Immunglobulin und 4 aktiven Impfdosen - kann verhindert werden, dass sich die Infektion zur tödlichen Tollwut entwickelt. Immunglobuline und moderne, hoch gereinigte Impfstoffe sind in vielen Regionen nicht erhältlich. Kinder sind besonders gefährdet, da sie häufig Bissen im Gesicht ausgesetzt sind und das Virus nur einen kurzen Weg zurücklegen muss, um das Gehirn zu erreichen bzw. auch kleine Wunden unbemerkt geschehen können.
Folgen für Reisende
Kontakt mit Tieren vermeiden (auf keinen Fall füttern!). Nach einem Tierbiss/-kratzer, die Wunde mit fliessendem Wasser und alkalischer Seife 15 Minuten lang waschen, desinfizieren und in jedem Falle ein qualitativ hochwertiges medizinisches Zentrum aufsuchen (post-expositionelle Impfung). Für Reisende mit erhöhtem Individualrisiko (Reisen mit Zweirädern, in entlegene Gebiete, Langzeitaufenthalte, Kleinkinder, Höhlenforscher, Kontakt mit Tieren / Fledermäuse etc.) empfiehlt das Schweizerische Expertenkomitte für Reisemedizin eine prä-expositionelle Impfung vor der geplanten Reise (2 Injektionen und eine Auffrischimpfung nach 1 Jahr).
Referenzen
Outbreak News Today; via ProMED-mail
Seit Anfang Jahr wurden im mexikanischen Bundesstaat unmittelbar südlich des US-Bundesstaates Kalifornien 23 Fälle von Rocky Mountain Spotted Fever (RMSF) diagnostiziert, davon sind acht Personen verstorben. Die Verstorbenen waren alles Kinder und Jugendliche; Gründe dafür sind am ehesten die engeren Kontakte mit ihren Hunden, die die infizierten Zecken nach Hause bringen und die grundsätzlich erhöhte Mortalität bei Kindern und Jugendlichen.
RMSF wird durch Rickettsia rickettsii verursacht, eine durch Zecken übertragene Infektion. Entsprechend werden die meisten Fälle im Sommer gemeldet. Die Infektion zeigt sich anfänglich mit unspezifischen Symptomen. Der typische Ausschlag zeigt sich häufig erst nach wenigen Tagen, so dass die Diagnose bei Symptombeginn nicht leicht zu stellen ist. Die Infektion lässt sich mit einer raschen Doxyzyklin-Therapie gut behandeln. Kinder < 10 Jahren haben ein 5-fach erhöhtes Risiko an RMSF zu versterben.
Folgen für Reisende
Schützen Sie sich gegen Zecken (gut abschliessende Kleidung und die Socken über den Hosen tragen, Applikation von Insektiziden auf der Kleidung) und untersuchen sie Körper und Haare regelmässig. Manchmal kann ein Zeckenstichbiss unbemerkt bleiben. Finden Sie eine Zecke, entfernen Sie sie mit Hilfe einer Pinzette, indem Sie sie so nah wie möglich an der Haut fassen und allmählich rausziehen. Vermeiden Sie es, die Zecke zu zerdrücken (Kontaminationsrisiko), niemals mit einem Streichholz verbrennen oder verschiedene Flüssigkeiten anzuwenden. Waschen und desinfizieren Sie die Bissstelle und Ihre Hände. Konsultieren Sie bei Fieber oder Hautrötung für eine eventuelle Behandlung einen Arzt.
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