Health Surveillance in Brittany. Bulletin of April 4, 2025.

Key Points

Influenza and influenza-like illness

  • Post-epidemic activity. Continued low detection rates of influenza A and B viruses, according to the virology laboratories at Rennes University Hospital and Brest University Hospital. Continued decline in calls to SOS Médecins.

Bronchiolitis

  • Non-epidemic activity. Low detection of RSV according to the virology laboratories at Rennes University Hospital and Brest University Hospital. Other viruses capable of causing bronchiolitis are circulating, notably rhinoviruses.

Gastroenteritis

  • High activity. High activity affecting children in particular. The upward trend in emergency department visits among those under 15 continues.

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