To date in 2025, public health authorities in France have reported 14 cases of locally acquired chikungunya virus disease in seven different local administrative units. All clusters are currently classified as active. This week authorities reported the first locally acquired chikungunya virus disease case from the Bas-Rhin department. The other departments have reported locally acquired chikungunya virus disease or dengue cases in previous years.
Locally transmitted Chikungunya cases as of 2 July 2025 (for updates see LINK):
More locally acquired cases are expected in the upcoming summer season.
Optimal mosquito protection 24/7, also in cities (also against other mosquito-borne diseases such as dengue). The Swiss Expert Committee for Travel Medicine does not recommend chikungunya vaccination for travelers visiting mainland France or Corsica.