In 2025 and as of 16 July 2025, 31 locally transmitted cases have been reported from France (30) and Italy (1).
More locally acquired cases are expected in the 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 Italy, mainland France or Corsica.