Key points

Chikungunya, dengue, Zika

• Since May 1, 2022, Île-de-France has reported the highest number of arbovirus cases in mainland France, with 18 confirmed cases of dengue, all linked to imported cases.

• The confirmed cases of dengue were mostly imported from Africa and the Americas.

• In mainland France, Aedes albopictus—a mosquito that transmits, among other viruses, dengue, chikungunya, and Zika—has been established since 2004 and is spreading to new departments each year. As of January 1, 2022, 67 of these departments are considered colonized by the mosquito (out of the 96 metropolitan departments), including all departments in the Île-de-France region.

• As of January 1, 2022, there are 52 colonized municipalities in the Île-de-France region, spread across all departments.

Extreme heat, heat wave

• Météo-France orange alert in effect from June 17, 2022, to June 18, 2022, for all departments in the Île-de-France region.