Key Points

Six episodes of local transmission detected

• Five episodes of local chikungunya transmission identified in the region as of August 27, 2025: Landes (1 case), Pyrénées-Atlantiques (3 cases), Charente (14 cases), Dordogne (30 cases), and Gironde (1 case);

• One episode of local dengue transmission identified in Gironde (3 cases detected as of August 27, 2025);

• Investigations, management, and prevention measures are underway.

Summary of imported cases

• From May 1 to August 26, 2025, 144 imported cases of chikungunya and 106 imported cases of dengue identified as probable or confirmed, and no imported cases of Zika;

• Most of these individuals were returning from a trip to French overseas territories.