Indian Ocean Chikungunya Outbreak Spreads on Mauritius

While the South Indian Ocean chikungunya outbreak has been focused on France's Réunion Island, the Republic of Mauritius has also reported imported and local cases in 2025. 

According to the Mauritius health services, most mosquito-transmitted chikungunya cases were imported from Asia and Africa.

On March 17, 2025, Mauritius, located east of Africa and Madagascar, reported the first local case in the country since 2009.

Then, on April 8, 2025, the World Health Organization (WHO) reported 17 local chikungunya cases in Mauritius.

The WHO says virus transmission persists in populations with low prior exposure, making vaccines essential to a comprehensive chikungunya outbreak response.

As of April 10, 2025, the U.S. CDC has not issued a Travel Health Notice regarding this chikungunya outbreak.

For travelers departing from the United States, the United Kingdom, or Europe, effective chikungunya vaccines, such as IXCHIQ®, have been approved by government agencies and are commercially available at most travel clinics and pharmacies.