Health Surveillance in Brittany. Bulletin of March 27, 2026.

Key points

Bronchiolitis (under 1 year of age)

  • Non-epidemic activity. Low number of visits to hospital emergency departments and SOS Médecins consultations. Low detection of RSV according to virology laboratories at university hospitals in the region. Other viruses capable of causing bronchiolitis are circulating, notably rhinoviruses.

COVID-19

  • Low activity.

Influenza and influenza-like illness

  • Non-epidemic activity, low. Low 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. Stable emergency department visits and a decrease in SOS Médecins consultations across all age groups.

Pneumonia

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

Chickenpox

  • Significant increase in SOS Médecins consultations.

Allergies

  • The upward trend in SOS Médecins consultations among people aged 15–74 continues.

In relation to

Our latest news

news

Traveling to Overseas Territories and Abroad: Are Your Vaccinations Up to Date?

news

Public Health France Conference: November 9, 2026

news

Swim Safely by Following the Right Steps