Over 200 Chikungunya Cases Reported by France's Mayotte

As the Chikungunya virus outbreak continues in the Indian Ocean countries, the French Department of Mayotte has become another hotspot for this mosquito-transmitted, vaccine-preventable disease.

As of May 16, 2025, Regional Health Agency (ARS) Mayotte reported 205 confirmed Chikungunya cases, including 34 imported cases, 109 locally acquired cases, and 62 cases currently under investigation.

From a severity perspective, these infections have led to eight hospital admissions during this year's outbreak.

'Given the evolving situation and the risk of an epidemic in the coming weeks, Mr. Sergio Albarello, Director General of ARS Mayotte, in consultation with Mr. François-Xavier Bieuville, Prefect of Mayotte, has decided to activate today the transition to level 2B of the ORSEC plan,' wrote ARS Mayotte.

Furthermore, ARS says it is also possible to get vaccinated against Chikungunya in Mayotte at various locations. Valneva's IXCHIQ® Chikungunya vaccine is recommended to combat severe forms of the disease for people aged 18 to 64 with comorbidities. The latter is available upon medical prescription and free of charge for these people.

In the United States, the CDC recommends that certain international travelers be vaccinated before visiting Chikungunya outbreak areas in 2025.