On 2 November 2026, health authorities in New York reported the state's first measles-associated death in over 30 years, involving a child in Lewis County. As of 24 October, New York state had recorded 178 measles cases in 2026 (+70 within one month). Neighboring Pennsylvania reported 1’433 cases, including 269 hospitalizations and six deaths, as of 2 November.
Nationwide, 4’852 measles cases had been reported in 2026 as of 30 October – more than twice the total recorded during the entire year of 2025 (2’289 cases). Most cases are reported among unvaccinated individuals.
Reminder to all travellers and students: Measles spread quickly and can be dangerous - protection is simple: get vaccinated!
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 at one month interval. In the event of an epidemic in the region or contact with a measles case, vaccination is recommended from the age of 6 months.
As of 30 October 2026, California reported 502 human cases of West Nile virus (WNV) disease across 24 counties, including 31 deaths – the highest annual case count since 2017. Of these, 429 cases (85%) involved neuroinvasive disease. The median age of case patients was 66 years and 326 (65%) of the case patients were male. The dates of symptom onset ranged from June 8 to October 16. Los Angeles County was particularly affected, accounting for 293 cases (58%) and 12 deaths.
Nationwide, the US CDC reported 1’668 human WNV cases across 47 states as of 3 November 2026, with California accounting for approximately 30% of all reported cases.
As of 25 October 2026, Ho Chi Minh City reported 44'191 cases of hand, foot and mouth disease (HFMD), a 67% increase compared with the same period in 2025. Weekly case numbers have exceeded the five-year average since September. Enterovirus A71 (EV-A71), which can cause severe disease, has been detected.
Nationwide, approximately 100'000 cases were reported between January and September 2026, more than twice the number recorded during the same period in 2025. Most cases (87%) occurred in children under five years of age.
Auckland has reported an increase in pertussis (whooping cough) activity, with 37 cases recorded over three weeks in October 2026. Cases were reported in 21 schools and early childhood centres, compared with only four affected facilities in September. The widespread distribution across educational settings suggests ongoing community transmission. Elsewhere in New Zealand, pertussis activity remained low during the same period.
A national pertussis epidemic was declared on 22 November 2024 following an increase in cases throughout New Zealand beginning on 19 October 2024 and a total of 5’012 cases until end of August 2026. The epidemic was declared over on 25 August 2026.
Laut Medienberichten, die sich auf Angaben des marokkanischen Ministeriums für Gesundheit und Sozialschutz berufen, wurden bis zum 14. Oktober 2026 insgesamt 15 Diphtherie-Fälle in Marokko bestätigt.
Die meisten Fälle wurden in den Regionen Casablanca-Settat und Souss-Massa festgestellt. Auch aus anderen Regionen des Landes wurden einzelne Fälle gemeldet.
Diphtherie ist eine ansteckende bakterielle Infektionskrankheit. Sie betrifft vor allem den Rachen und die Atemwege und kann zu starken Halsschmerzen, Schluckbeschwerden und Atemproblemen führen. In schweren Fällen kann sie lebensgefährlich sein.
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