The Pan American Health Organization (PAHO) has issued an alert due to an increase in human cases of yellow fever (YF) in the last months of 2024 and beginning of 2025 in countries in the Region of Americas.
In the first 4 weeks of 2025:
- 17 confirmed human cases of YF have been reported in: Brazil (8 cases, incl. 4 deaths, all in state São Paulo), Colombia (8 cases, incl. 2 deaths), and Peru (1 death).
- Cumulatively in 2024:
61 human YF cases were confirmed the Americas Region. Out of them, at least 7 cases had history of vaccination. Cases were reported in Bolivia (8 cases incl. 4 death), Brazil (8 cases incl. 4 death), Colombia (23 cases incl. 13 deaths), Guyana (3 cases) and Peru (19 cases, incl. 9 deaths).
Yellow fever cases in humans in the Americas Region, between January 2020 and January 2025:
Vaccination against yellow fever is strongly recommended for all travellers to regions where yellow fever occurs, even if it is not a mandatory entry requirement of the country. The details can be found in the respective countries on www.healthytravel.ch.