Key Points

• Peak activity for lower respiratory tract infections was slightly higher than in the previous two seasons in emergency departments, primarily due to the flu epidemic; among SOS Médecins organizations, peak activity was comparable to the previous two seasons but occurred earlier.
• A short-lived bronchiolitis outbreak among infants under one year of age; the intensity of the outbreak and its impact on hospitals were low, lower than in previous seasons.
• An early flu outbreak, though of similar duration to the previous two seasons; the intensity of the outbreak was moderate in primary care but high in hospitals, where the impact was greater than in previous seasons.
• Active circulation of SARS-CoV-2 until the end of October 2025, with low utilization of healthcare services, followed by low-level viral circulation.