Health Surveillance in Brittany. Bulletin of February 20, 2026.

Key points

Bronchiolitis (under 1 year of age)

  • Activity outside of an epidemic. Decrease in hospital emergency room visits and stability in SOS Médecins consultations. Virology laboratories at the region’s university hospitals report low detection of RSV. Other viruses capable of causing bronchiolitis are circulating, notably rhinoviruses.

COVID-19

  • Low activity.

Influenza and influenza-like illness

  • Post-epidemic activity. Decrease in the number of emergency room visits and SOS Médecins consultations for influenza and influenza-like illness. Decrease in the detection of influenza A virus according to data from the virology laboratories at the Rennes University Hospital and the Brest University Hospital.

Gastroenteritis

  • High activity. Slight decrease in emergency room visits and stable SOS Médecins consultations across all age groups.

Pneumonia

  • Slight decrease in emergency room visits and stable SOS Médecins consultations for pneumonia.

Asthma

  • High activity. Slight decrease in emergency room visits and SOS Médecins consultations, all ages.

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