Key Points 

Extreme Heat, Heat Wave 

• Third heatwave in the region from July 6 to 16, 2026.
• Healthcare utilization indicators have been declining since the end of this third heatwave.

Chikungunya, dengue, and Zika

• Since May 1, 2026: 19 imported cases of dengue, 2 imported cases of chikungunya, and 1 imported case of Zika have been reported in the Pays de la Loire region.

Hepatitis A

• The decline in the number of hepatitis A cases continued throughout June 2026.