Acute respiratory infections (influenza, bronchiolitis, COVID-19). Bulletin dated January 21, 2026.

Key Points

Acute Respiratory Infections (ARI)

  • Overall low and declining activity among adults; low to moderate and increasing among children.

Influenza

  • Healthcare utilization continues to decline among adults and is increasing among children, both in outpatient settings and in hospitals. Significant circulation of influenza viruses persists. All French regions are experiencing an epidemic, except for Mayotte, which has moved into the post-epidemic phase, and Réunion, which has returned to baseline levels.

Bronchiolitis

  • Decrease in syndrome-based indicators in outpatient settings and hospitals. The epidemic continues in Bourgogne-Franche-Comté and the French West Indies. Four regions have moved into the post-epidemic phase and three regions have returned to baseline levels this week in mainland France. Mayotte has entered the epidemic phase.

COVID-19

  • Syndromic indicators are stable and at very low levels. The SARS-CoV-2 monitoring indicator in wastewater is decreasing.

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