Health Monitoring in the Île-de-France Region. Bulletin of December 3, 2025.

Key Points

Chikungunya, dengue, Zika

Imported cases:

  • 255 dengue

  • 208 chikungunya

  • 1 Zika

Local cases:

  • 2 chikungunya

West Nile virus infections

  • 24 confirmed local human cases of West Nile

Bronchiolitis

  • Epidemic level: Bronchiolitis activity levels stabilized in week 48, reaching a level comparable to those observed last season. Île-de-France has been on epidemic alert for the sixth week.

Influenza and influenza-like illness

  • Elevation to epidemic alert level in Île-de-France for week 48.

COVID-19

  • SOS Médecins: The number of cases involving suspected COVID-19 remained stable in week 48 across all age groups. Case numbers remained low, particularly among children under 15 and adults aged 65 and older.

  • Emergency room visits: The number of emergency room visits for suspected COVID-19 remained stable in week 48 across all age groups. Case numbers remained low.

In relation to

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

2026 “Sexual Behavior” Survey (ERAS) for men who have sex with men