Health Surveillance in Brittany. Bulletin of February 13, 2026.

Key points

Bronchiolitis (under 1 year of age)

  • No epidemic activity. Hospital emergency room visits and SOS Médecins consultations remain stable. Virology laboratories at the region’s university hospitals report low detection rates of RSV. Other viruses capable of causing bronchiolitis are circulating, notably rhinoviruses.

COVID-19

  • Low activity.

Influenza and influenza-like illness

  • Epidemic activity. Decrease in the number of emergency room visits and SOS Médecins consultations for influenza and flu-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. Increase in the number of emergency room visits and SOS Médecins consultations across all age groups.

ENT conditions

  • High activity. In S05, among children under 5, ENT conditions accounted for 12% of emergency department visits (compared to 11% in S04) and 47% of SOS Médecins consultations (compared to 46% in S04). Increase in the detection rate of rhinoviruses/enteroviruses by the Virology Laboratory at Rennes University Hospital (positivity rate of 12.3% in S05 compared to 9.3% in S04) and stability in the detection rate at Brest University Hospital (positivity rate of 4.0% in S05 compared to 4.5% in S04).

Pneumonias

  • A slight increase in emergency department visits and a slight decrease in SOS Médecins consultations for pneumonia.

Asthma

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

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