Key Points Bronchiolitis in children under 1 year of age Flu outbreak in the Pays de la Loire region since week 49. Indicators on the rise. Moderate levels. Flu and flu-like...

Key points Bronchiolitis (children under 1 year of age) The epidemic continues in week 51 of 2025 (December 15–21) Slight increase in activity at SOS Médecins clinics and stability in...

Key points Acute lower respiratory infections Increased activity in urban areas, at SOS Médecins and within the Sentinelles network, as well as in emergency departments; this increase...

Key points Bronchiolitis Epidemic level: Bronchiolitis activity levels were down in week 51 and continued to remain at a level comparable to last season. The Île-de-France region is on...

Key Points Acute respiratory infections (ARI) Activity continues to rise across all age groups. Influenza Flu indicators continue to rise across all age groups. Moderate activity in...

Key Points In Week 51 (December 15–21, 2025), the number of emergency department visits and the number of hospitalizations following those visits remained stable across all age...

Key Points In Week 51 (December 15–21, 2025), activity among SOS Médecins associations increased compared to the previous week for those aged 75 and older (+10%, or +666 procedures) and...

Key Points At the national level, the number of deaths from all causes reported by INSEE remains within the usual range of fluctuation in S50-2025 across all age groups. At the...

Key points Bronchiolitis In week 51-2025, the rise in bronchiolitis indicators, which began in week 45-2025, continues in emergency departments. Bronchiolitis accounts for 21% of...

Key Points Low activity in private practice (SOS Médecins) and low activity in hospital-based practice (Oscour®).