Chikungunya, dengue, Zika, West Nile, and Usutu viruses in the Île-de-France region. 2025 Report.
Key Points
- In 2025: a record number of imported chikungunya cases, linked to the outbreak in the Indian Ocean. Imported cases were also reported from Asia, Cuba, and sub-Saharan Africa.
- 257 imported cases of dengue
- 211 imported cases of chikungunya
- 1 imported case of Zika
- Two locally transmitted cases of chikungunya detected in Île-de-France (Paris 11th arrondissement and Saint-Maur-des-Fossés (94)).
- Emergence of West Nile and Usutu viruses in Île-de-France in 2025:
- 19 locally transmitted cases of West Nile virus infection,
- 2 locally acquired cases of Usutu virus infection
- 7 cases of flavivirus infection (West Nile/Usutu) detected between July 31 (date of reporting of the first locally acquired case) and November 30 (end of enhanced surveillance).
In relation to
Chikungunya
thematic dossier
Chikungunya is a viral disease transmitted by mosquitoes of the genus Aedes. The most common symptoms are fever and joint pain.
Dengue
thematic dossier
Dengue fever is a viral disease transmitted by mosquitoes of the genus Aedes. The most common symptoms are fever and joint pain. Its complications can be severe.
West Nile virus
thematic dossier
West Nile virus is an arbovirus primarily transmitted by mosquitoes that can cause neurological disorders in humans. It is a virus found in birds, but it can also infect humans and horses. In...
Our latest news
news
Call for Applications for the Renewal of the Editorial Board of the Weekly...
news
Launch of the “Heating, Health, Buildings, and Urban Planning” Network:...
news
