Key points

Bronchiolitis

• Activity outside of an epidemic.

• 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.

Influenza and influenza-like illness

• Post-epidemic activity.

• Detection 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.

Invasive meningococcal infections (IMI)

• Since early March 2025, a vaccination campaign against meningococcal B has been organized for young people aged 15 to 24 who live, attend school, study, or work in Rennes Métropole. More information is available on the ARS Bretagne website.

Acute gastroenteritis

• High activity.

• High activity, particularly affecting children.

• The upward trend in emergency room visits among those under 15 continues.