Key Points 

Chikungunya, Dengue, and Zika

Indigenous Cases 

• No locally acquired cases have been identified in mainland France.

Imported cases 

From May 1, when enhanced surveillance began, through July 5, 2026, the following cases were identified: 

• 65 imported cases of chikungunya
• 206 imported cases of dengue
• 8 imported cases of Zika

West Nile virus infections

Indigenous cases 

• No locally acquired cases have been identified in mainland France.