Key Points

Chikungunya, dengue, and Zika

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

• 139 imported cases of dengue

• 154 imported cases of chikungunya

West Nile virus infections

• Two confirmed cases of local West Nile virus infection have been detected in Île-de-France in the department of Seine-Saint-Denis. This marks the first identification of local vector-borne transmission of West Nile virus in Seine-Saint-Denis, and more broadly in Île-de-France.

COVID-19

• The number of emergency room visits or procedures at SOS Médecins for suspected COVID-19 remained low and stable.

Asthma

• The summer vacation period corresponds to the time when the risk of asthma exacerbation is lowest. Long-term treatment for asthma patients is sometimes paused during the summer at the initiative of the doctor or the family, with instructions given to parents to resume it before school starts. It is important to resume long-term treatment at least 8 days before school starts, to ensure a back-to-school period free of asthma.

Heat Wave, Extreme Heat

• As of Tuesday, August 12, 2025, at 12:00 p.m., the entire Île-de-France region has been placed under an orange heat wave alert.