Bronchiolitis poses a significant public health challenge. A surveillance program and a prevention policy have been implemented to limit the spread of the disease.

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...

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 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...

Key Points In Week 15 (April 6–12, 2026), activity at SOS Médecins continued to rise among those aged 75 and older (+7%, or +499 visits) and remained stable or declined in other...

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

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...

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...

Acute bronchiolitis is a viral respiratory illness that primarily affects children under the age of 2 during seasonal winter outbreaks.

View data on the epidemiological situation regarding bronchiolitis in France and by region on Santé publique France.