Key Points

Bronchiolitis in children under 1 year of age

• Bronchiolitis indicators are at baseline levels in the region.

Flu-like illnesses

• Flu indicators continue to decline, confirming the end of the 2025–2026 epidemic in the Grand Est region.

COVID-19

• COVID-19 activity is also decreasing across all data sources analyzed.

Acute gastroenteritis

• Activity related to acute gastroenteritis is increasing among SOS-Médecin associations, with 740 consultations recorded in 2026-S10 (versus 594 consultations in 2026-S09). This increase, which affects those under 15 years of age, is not, however, reflected in emergency department activity.