Key Points

Several outbreaks of local transmission of chikungunya and dengue detected:

• Ten local outbreaks of chikungunya identified (9 in Gironde and 1 in Landes), 9 of which are still active 
• One locally transmitted dengue outbreak identified in Dordogne (resolved) 
• Investigations, management, and prevention measures are ongoing

First locally transmitted cases of West Nile virus infection detected in 2026:

• Four locally transmitted cases identified in Gironde
• Measures to ensure the safety of products derived from the human body have been implemented in Gironde