Key Points

Dengue, Chikungunya, and Zika

• No local transmission in Île-de-France in 2025, as of now.

Drowning

• In Île-de-France, between June 1 and July 2, the proportion of drownings resulting in death was particularly high among minors aged 13 to 17 in lakes or waterways, especially on days of extreme heat.

• Between June 1 and July 29, 2025, the Paris Fire Brigade reported 16 rescue operations for drowning incidents, including 4 deaths in Paris and the Petite Couronne

Hepatitis A

• Since the beginning of 2025, a resurgence of hepatitis A cases has been observed in Île-de-France, reaching levels comparable to those before the COVID-19 pandemic. The increase in the number of reported cases has accelerated in recent weeks, particularly in the city of Paris.