Acute respiratory infections (influenza, bronchiolitis, COVID-19). Bulletin dated November 26, 2025.

Key Points

Acute respiratory infections (ARI)

  • Activity is clearly on the rise among children and generally stable among adults.

Influenza

  • Increase in influenza indicators as the Île-de-France, Normandy, and Nouvelle-Aquitaine regions enter the pre-epidemic phase, and Mayotte enters the epidemic phase.

Bronchiolitis

  • Syndromic indicators are rising. Epidemic phase in Île-de-France, Normandy, Brittany, and Pays de la Loire. Six regions in mainland France are in the pre-epidemic phase.

COVID-19

  • All indicators are decreasing and at low levels.

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