Key points

Extreme heat and heat waves

• Seasonal monitoring began on June 1.

• 269 heat-related deaths throughout the summer of 2023, including 236 deaths during heat waves.

Whooping cough

• Resurgence of cases.

COVID-19

• Increase in May 2024 in the circulation of SARS-CoV-2, though levels remain low.

Hepatitis A

• An increase in mandatory reports of hepatitis A cases has been observed since May 2024, particularly in connection with two clusters of cases in Normandy:

  • a collective foodborne illness outbreak linked to the consumption of oysters in Calvados;

  • a cluster of cases at a middle school in Seine-Maritime.

Zika, Dengue, Chikungunya

• In Normandy, since surveillance began on May 1, 23 imported cases of dengue have been reported through mandatory reporting.