Health Surveillance in Hauts-de-France. Bulletin of January 23, 2025.

Key points

Acute lower respiratory tract infections

  • High activity, decreasing in emergency departments (all ages) but increasing in primary care, particularly among children under 15.

Bronchiolitis

  • Transitioning into the post-epidemic phase.

  • Downward trends in primary care and hospitals (emergency departments and hospitalizations).

  • RSV positivity rates are decreasing but remain at a high level.

Influenza and influenza-like illnesses

  • 7th week of the epidemic.

  • Activity across all age groups in emergency departments has stabilized at a high level.

  • Increase in the incidence rate of influenza-like illnesses (Sentinelles Network + IQVIA) and increase in activity across all age groups at SOS Médecins, particularly significant among those under 15.

  • Stabilization of the influenza virus positivity rate at the Lille and Amiens university hospitals.

COVID-19

  • Low and stable activity in emergency departments and at SOS Médecins.

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