Several countries in the European Union have observed an increase in reported cases of hepatis A genotype 1B. In particular, Austria, Czechia and Hungary have observed more reported cases than expected between November 2024 to May 2025.
The increase of HAV infection is mainly affecting adults that are experiencing homeless, people with a drug addiction and people living in poor sanitary conditions. Two genetically closely related clusters of HAV 1b have been identified (cluster a and cluster b).
The chain of transmission is ongoing, and new cases are likely to occur.
Vaccination against hepatitis A is recommended for people visiting friends and relatives in remote rural areas and/or where hygiene conditions are poor as well as for risk persons, see SOP hepatitis A at www.healthytravel.ch PRO version.
The probability of European citizens becoming infected with communicable diseases during the Jubilee 2025 is low if general preventive measures are applied such as
Die Daten zu Masernfällen in der Europäischen Union und im Europäischen Wirtschaftsraum (EU/EWR) in den letzten zwölf Monaten (1. Februar 2024 bis 31. Januar 2025 32‘265 Masernfälle) zeigen einen deutlichen Anstieg der Meldungen im Vergleich zu 2023. Rumänien (27‘568), Italien (1‘097), Deutschland (637), Belgien (551) und Österreich (542) wiesen die höchsten Fallzahlen auf.
Aufgrund der vermehrten Viruszirkulation, werden die Fallzahlen sehr wahrscheinlich im Frühjahr 2025 zunehmen. Die anhaltende Übertragung deutet auf Lücken in der Durchimpfung gegen diese vermeidbare Krankheit hin – sowohl bei Kindern als auch bei Jugendlichen und Erwachsenen.
Lassen Sie Ihren Impfstatus überprüfen!
Alle nach 1963 geborenen Personen, die keinen nachgewiesenen Schutz gegen Masern haben (Antikörper oder 2 nachgewiesene Impfungen), sollten zweimal mit dem MMR-Impfstoff geimpft werden. Im Falle einer Epidemie in der Region oder bei Kontakt mit einem Masernfall wird die Impfung ab einem Alter von 6 Monaten empfohlen.
The data from the latest ECDC annual epidemiologic reports on sexual transmitted diseases (STIs) show the notification rate for confirmed gonorrhea cases in European Union/European Economic Area countries rose by 31% in 2023 compared with 2022 and has risen by 321% since 2014.
Syphilis cases also continue to rise. In 2023, 41’051 confirmed cases were reported in 29 EU/EEA countries, representing a 13% increase compared to 2022, and a doubling compared to 2014.
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:
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.
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.
All travellers should have completed a basic immunisation and boosters according to the Swiss vaccination schedule, LINK.
All travellers should have completed a basic immunisation and boosters according to the Swiss vaccination schedule, LINK.
General information on measles, mumps and rubella (MMR)
Please consult the following FOPH links:
Travellers should be immune to chickenpox. Persons between 13 months and 39 years of age who have not had chickenpox and who have not received 2 doses of chickenpox vaccine should receive a booster vaccination (2 doses with minimum interval of 4 weeks), see Swiss vaccination schedule, LINK.
Please consult the following link of the FOPH:
General information about chickenpox (varicella) and shingles (herpes zoster)
General informations about seasonal flu (influenza)
Please consult the following FOPH links:
There is a risk of arthropod-borne diseases other than malaria, dengue, chikungunya or zika in sub-/tropical regions, and some areas of Southern Europe. These include the following diseases [and their vectors]:
EKRM_Factsheet_Layperson_EN_Dengue.pdf
EKRM_Factsheet_Layperson_EN_Mosquito-and-tick-bite-protection.pdf
ECTM_Dengue_Vaccination_Statement_EN_Publication_Sept_2024.pdf
CDC Map: Distribution of dengue
Dengue fever is the most common insect-borne infectious disease worldwide. There are 4 known serotypes of dengue virus, so it is possible to be infected with dengue more than once. Approximately 1 in 4 infected individuals develop symptoms of dengue, resulting in high fever, muscle and joint pain, and skin rash. In rare cases, most often after a second infection, life-threatening bleeding and shock (severe drop of blood pressure) may occur.
In 3 out of 4 cases, an infection with the virus remains asymptomatic. After a short incubation period (5-8 days), 1 out of 4 infected people present an abrupt onset of fever, headache, joint, limb and muscle pain, as well as nausea and vomiting. Eye movement pain is also typical. A rash usually appears on the 3rd or 4th day of illness. After 4 to 7 days, the fever finally subsides but fatigue may persist for several days or weeks.
In rare cases, severe dengue can occur. Particularly susceptible are local children and seniors as well as people who have experienced a prior dengue infection. Tourists extremely rarely present with severe dengue. In the first days, the disease resembles the course of classic dengue fever, but on the 4th/5th day, and usually after the fever has subsided, the condition worsens. Blood pressure drops, and patients complain of shortness of breath, abdominal discomfort, nosebleeds, and mild skin or mucosal hemorrhages. In the most severe cases, life-threatening shock may occur.
There is no specific treatment for dengue virus infection. Treatment is limited to mitigation and monitoring of symptoms: fever reduction, relief of eye, back, muscle and joint pain, and monitoring of blood clotting and blood volume. Patients with severe symptoms must be hospitalised.
For treatment of fever or pain, paracetamol or acetaminophen are recommended (e.g. Acetalgin® Dafalgan®). Drugs containing the active ingredient acetylsalicylic acid (e.g. Aspirin®, Alcacyl®, Aspégic®) must be avoided.
Effective mosquito protection during the day and especially during twilight hours (i.e. sunset) is the best preventive measure:
For further information, please refer to the factsheet on "Mosquito and tick bite protection".
Note on the dengue vaccine Qdenga®:
Consistent mosquito protection during the day (see above) is still considered the most important preventive measure against dengue!
Of note
Chikungunya_ECTM_Factsheet_Layperson_EN.pdf
EKRM_Factsheet_Layperson_EN_Mosquito-and-tick-bite-protection.pdf
The infection may cause some or all of the following symptoms: sudden onset of high fever, headache, muscle and joint pain, joint swelling, rash. The rash usually appears after the onset of the fever and usually affects the trunk and extremities. The joint pain and swelling usually occur symmetrically on both sides and mainly affect the hands and feet - but larger joints such as the knees or shoulders can also be affected. The intense joint pain can be very debilitating for those affected.
Around 5 - 10 % of those infected have persistent severe joint and limb pain even after the fever has subsided, which in some cases lasts for several months or, although rarely, even years.
Preventive measures against mosquito bites during the day: Apply mosquito repellent to uncovered skin; wear long clothing; treat clothing with insecticide. For more information, see the information sheet "Protection against insect and tick bites". Another very important protective factor is so-called 'environmental hygiene': breeding sites for mosquitoes in the immediate vicinity of human dwellings should be avoided by removing all forms of containers with water (e.g. flowerpot saucers, uncovered water containers, etc.).
Vaccination: Two Chikungunya vaccines are currently approved in the US and EU (IXCHIQ® and VIMKUNYA®), but not yet in Switzerland. The Swiss Expert Committee for Travel Medicine is currently reviewing the recommendation for travellers.
Wichtig: Eine STI kann auch ohne oder mit nur leichten Symptomen auftreten. Auch wenn Sie sich dessen nicht bewusst sind, können Sie andere anstecken. Deshalb ist es wichtig sich testen zu lassen.
Durch Bakterien oder Parasiten hervorgerufen
Alle diese Krankheiten können geheilt werden. Wichtig ist dabei, frühzeitig zu testen und umgehend zu therapieren, um Komplikationen und v.a. weitere Übertragungen zu vermeiden.
Durch Viren hervorgerufen
The incubation period (time between infection and onset of symptoms) ranges from a 2 to 21 days (usually 5 to 10 days). The onset of MVD is usually abrupt, with initially 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 diarrhoea. As the disease advances, clinical manifestations can become more severe and include liver failure, delirium, shock, bleeding (hemorrhaging), multi-organ dysfunction and death.
In case of symptoms
If think that you have had an exposure at risk and develop fever with nonspecific symptoms such as chills, headache, muscle pain, malaise or abdominal pain:
The risk for travellers is very low if the below precautions are followed, but it is high for family members and caregivers who have contact with sick people.
General precautions during travel to affected areas:
Mpox has been commonly found in West and Central Africa for many years where the suspected reservoir - small mammals - is endemic. There are two types of Monkeypox virus called ‘clades’ that cause the disease mpox - clade I in Central Africa and clade II in West Africa. Since the end of smallpox vaccination campaigns in the early 1980’s, cases of mpox have increased, slowly at first and significantly in the last 5-10 years, especially in the Democratic Republic of Congo (DRC).
In 2022, a new emerging subclade of clade II was responsible for a global epidemic that spread mainly through sexual contact among men who have sex with men. It resulted in the first public health emergency of international concern (PHEIC) declared by the WHO until 2023. Although the clade II epidemic is now under control, this virus variant continues to circulate worldwide.
In 2024, the continued spread of mpox clade I in endemic regions of Central Africa, particularly in the DRC, and the emergence of a new subclade Ib in Eastern DRC and neighboring countries have raised global concern and prompted the WHO to declare a PHEIC for the second time in two years. The current geographical spread of the mpox clade Ib variant occurs via commercial routes through sexual contact (e.g. sex workers), followed by local transmission in households and other settings (which is becoming increasingly important).
Animal to human transmission
Mpox can spread from animal to human when they come into direct contact with an infected animal (rodents or primates).
Human to human transmission
Mpox can be spread from person to person through close physical contact (sexual and non-sexual contact) with someone who has symptoms of mpox. Skin and mucous membrane lesions, body fluids, and scabs are particularly infectious. A person can also become infected by touching or handling clothing, bedding, towels, or objects such as eating utensils/dishes that have been contaminated by contact with a person with symptoms. Household members, family caretakers, and sexual partners of a confirmed case of mpox are at higher risk for infection as are health care workers who treat a case without adequate personal protection.
The incubation period (time between infection and onset of symptoms) ranges from a few days up to 3 weeks. Mpox causes a rash / skin eruption that can be painful associated with swollen lymph nodes and fever. Fever may start already before the rash phase. Other symptoms include muscle aches, back pain, and fatigue. The rash may be localized or generalized, with few or hundreds of skin lesions. It mainly affects the face, the trunk and the palms of hand and soles of the feet. It can also be present in genital areas and on mucous membranes such as in the mouth and throat. Symptoms usually last 2 to 4 weeks and the person remains contagious until all lesions have healed (once the cabs have fallen off).
Complications include secondary bacterial infections, infections of the lung and brain and involvement of other organs, still birth and others. Children, pregnant women, and people with weak immune systems are at higher risk to develop a severe form of mpox.
The majority of person with mpox recovers spontaneously and do not need specific antiviral treatment. Care management consists of relieving pain and other symptoms and preventing complications (e.g., superinfection). Several antiviral treatments are studied in various countries and may be used in trials or in clinical situations according to the recommendations of national medical societies.
In case of symptoms:
General precautions:
Vaccination:
There are several vaccines against mpox (e.g. Jynneos®, manufacture Bavarian Nordic). The Bavarian Nordic vaccine was originally developed to fight against smallpox, but offers a cross-protection against mpox. In Switzerland, the Jynneos® vaccine has been licensed by Swissmedic since 2024. Groups at risk (e.g., men who have sex with men or transgender people with multiple sex partners) are eligible for vaccination since 2022 and this recommendation remains unchanged (see FOPH recommendations). In light of the epidemiological situation in Africa in 2024, the Swiss Expert Committee for Travel Medicine recommends vaccination against mpox for professionals who are / will be in contact with suspect mpox patients or animals in endemic/epidemic regions or who work in a laboratory with the virus (for updates, see news).
The risk to the general population and travelers (tourists) is considered extremely low if the above-mentioned general precautions are followed and vaccination is not recommended.
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