Health Monitoring in Brittany. Bulletin dated October 16, 2026.

Key Points

COVID-19

  • Trends in S41 remain mixed between emergency departments and SOS Médecins. The number of emergency department visits has remained stable, while SOS Médecins consultations have declined sharply following the peak in Week 40. Activity rates for each source remain well below those of previous years during the same period.

Bronchiolitis (Under 1 year)

  • Non-epidemic activity. In Week 41, bronchiolitis-related activity remains low in both hospital and community emergency departments. Virology laboratories at the two Breton university hospitals have detected the first RSV-positive samples of the season among the respiratory specimens tested. Other viruses capable of causing bronchiolitis are circulating, notably rhinoviruses.

Influenza and influenza-like illness

  • Non-epidemic activity. The monitored indicators for influenza and influenza-like illnesses remain low in Week 41, both in hospital emergency departments and at SOS Médecins. The virology laboratories at the Brest and Rennes university hospitals have been sporadically detecting influenza A viruses for several weeks.

Gastroenteritis

  • Activity remains low in Brittany; rates of emergency department visits and SOS Médecins consultations for acute gastroenteritis are close to the levels seen in previous years during the same period.

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