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.
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