Health Monitoring in the Île-de-France Region. Bulletin of October 15, 2025.

Key Points

Chikungunya, dengue, Zika

Imported cases:

  • 208 dengue

  • 184 chikungunya

  • 1 Zika

Local cases:

  • 2 chikungunya

West Nile virus infections

  • 11 confirmed local human cases of West Nile

Acute respiratory infections (bronchiolitis, COVID-19, and influenza)

  • The rate of emergency department visits for lower respiratory tract infections remained stable and accounted for 2.7% of emergency department activity (+2.5%). The number of emergency department visits for lower respiratory tract infections was on the rise (+6%), with 2,103 visits compared to 1,984 in week 40. Compared to previous winter seasons, the intensity level based on emergency department visits for lower respiratory tract infections remained low.

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