Health Monitoring in the Île-de-France Region. Bulletin of October 8, 2025.

Key Points

Chikungunya, dengue, Zika

Imported cases:

  • 205 dengue

  • 182 chikungunya

  • 1 Zika

Local cases:

  • 2 chikungunya

West Nile virus infections

  • 8 confirmed local human cases of West Nile

Acute lower respiratory infections

  • The rate of emergency department visits for acute lower respiratory infections continued to rise, reaching 2.7% of all emergency department visits (+9.6%), with 1,982 visits compared to 1,760 in week 39. Compared to previous winter seasons, the intensity level associated with this indicator remained low.

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