Key Points In Week 15 (April 6–12, 2026), the number of emergency room visits and subsequent hospitalizations remained stable across all age groups. In line with rising temperatures,...

Key Points Nationally and regionally, the number of deaths from all causes reported by INSEE remains within the usual range of fluctuation in Week 14 of 2026 across all age...

Key Points COVID-19 SARS-CoV-2 in wastewater: Six of the seven wastewater treatment plants have interpretable results. In Week 15, an overall trend toward stabilization in the level of...

Key Points Trends in surveillance indicators remain stable for adults and stable for children, at a high level High activity in private practice (SOS Médecins) and moderate activity in...

Key Points Acute respiratory infections Influenza, influenza-like illnesses, and bronchiolitis (under 1 year of age): outbreaks have ended. Activity levels related to influenza and...

Key Points Acute Respiratory Infections The number of cases of bronchiolitis in children under 1 year of age reported by the SOS Médecins Ajaccio association and emergency departments...

SurSaUD® Emergency and Death Surveillance. Weekly Summary for April 22, 2026.

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.