Key Points

Domestic cases No domestic cases have been identified in mainland France.

Imported cases From May 1, the start of enhanced surveillance, through May 20, 2025, the following were identified:

• 152 imported cases of dengue (n=137 in departments colonized by Aedes albopictus)

• 225 imported cases of chikungunya (n=214 in departments colonized by Aedes albopictus)

• 1 imported case of Zika (n=1 in departments colonized by Aedes albopictus).