Key Points Dengue, Chikungunya, and Zika  15 locally acquired cases of chikungunya in the town of Cavalaire in the Var department. Nearly 40% of West Nile virus cases in mainland...

Key Points Chikungunya, Dengue, and Zika Indigenous Cases As of October 12, 2026, 26 outbreaks (+2 new outbreaks compared to the previous week) of locally transmitted vector-borne...

Key Points Acute Respiratory Infections (ARI) Indicators are generally stable and at baseline levels. Influenza All indicators are at baseline levels. Sporadic detections of...

Key Points In Week 41 (October 5–11, 2026), activity at SOS Médecins clinics remained stable across all age groups.  Among children, there was an increase in the number of procedures...

Key Points Nationally and across all regions, the number of deaths from all causes reported by INSEE remained within the usual range of fluctuation in S40-2026 for all ages and across...

Key Points In Week 41 (October 5–11, 2026), the number of emergency department visits and hospitalizations following such visits remained stable across all age groups compared with the...

An influenza pandemic is an epidemic that spreads across a very large geographical area following the emergence of a new influenza virus, usually resulting from a major genetic change.

In mainland France, the epidemic occurs every year, generally between November and April, usually beginning in late December or early January. It lasts an average of 10 to 11 weeks.