In 2025, yellow fever cases have been reported in multiple countries of the Americas Region and detected in new areas.
Between EW 1 and EW 15 of 2025, 190 confirmed human cases of yellow fever have been reported in 5 countries, of which 74 have been fatal: Bolivia (2 cases, including 1 fatal), Brazil (102 cases, including 41 fatal), Colombia (53 cases, including 21 fatal), and Peru (32 cases, including 11 fatal).
Colombia (20.04.2025): The National Government declared a public health emergency due to increase number of cases of yellow fever in the country.
Ecuador (30.04.2025): The MOH confirmed 2 cases (1 fatal) from remote province (illegal mining).
Yellow Book (CDC): Vaccination recommendation expanded to new areas (see map below).
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.
For immunocompetent persons, the Swiss Expert Committee for Travel Medicine (ECTM) recommends a single life-time booster 10 years after the primary dose.