Key Points

Flu-like Illnesses and Acute Respiratory Infections

• In both hospital and outpatient settings, indicators of healthcare utilization for influenza-like illness were declining in the Île-de-France region across all age groups for the sixth consecutive week.

• The distribution of influenza virus types and subtypes has not undergone any major changes in recent weeks.

Acute Gastroenteritis (AGE)

• Stabilization in emergency department visits but a slight increase in visits followed by hospitalization for AGE across all age groups; Increase in both of these indicators among those under 15, primarily among children under 5: 80% of AGE-related emergency department visits involve children under 5.

• Stabilization in the number of AGE-related visits at SOS Médecins across all age groups.

• Stabilization of the incidence rate for acute diarrhea consultations among sentinel physicians.

• In S11, activity in emergency departments and at SOS Médecins for acute gastroenteritis remained at a high level and exceeded the trends from 2024 during the same period of the year. The 2025 rates are the highest for the 2022–2025 period.

COVID-19

• SOS Médecins: In Week 11, the number of cases for suspected COVID-19 decreased across all age groups. Case numbers remained low.

• Emergency room visits: In Week 11, the number of visits for suspected COVID-19 decreased following a slight increase in Week 10. This was observed across all age groups, with the exception of those aged 45–64. Case numbers remained low.

• SARS-CoV-2 in wastewater: Detection levels in wastewater increased slightly in Week 11, though the situation remained heterogeneous. The overall intensity of viral circulation remained low.