Acute respiratory infections (influenza, bronchiolitis, COVID-19). Bulletin dated December 3, 2025.
Key Points
Acute respiratory infections (ARI)
A marked increase in activity across all age groups.
Influenza
Significant increase in influenza indicators across all age groups. Île-de-France, Normandy, and Nouvelle-Aquitaine have entered the epidemic phase. All other regions in mainland France are in the pre-epidemic phase, except for Corsica. Mayotte has been in the epidemic phase since week 47.
Bronchiolitis
Syndromic indicators are rising. Twelve regions in mainland France are in an epidemic phase. Pre-epidemic phase in Guadeloupe and Martinique.
COVID-19
Syndromic indicators are generally stable and at low levels. Slight upward trend, but at a low level, in the SARS-CoV-2 monitoring indicator in wastewater.
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