Health Surveillance in Hauts-de-France. Bulletin of April 3, 2025.

Key Points

Acute respiratory infections

  • Moderate and declining activity in primary care and emergency departments (all ages).

Influenza and influenza-like illnesses

  • Third week of the post-epidemic phase;

  • decreased activity in emergency departments and at SOS Médecins (all ages);

  • Hospitalizations following emergency department visits have stabilized, all ages;

  • Stabilization of the influenza virus positivity rate at the University Hospitals of Lille and Amiens.

Acute gastroenteritis

  • Moderate activity, increasing at SOS Médecins among children under 5;

  • decrease in activity across all age groups in emergency departments;

  • Increase in hospitalizations following visits to the emergency department among children under 5;

  • Increased incidence in primary care, all ages, as estimated by the Sentinelles network.

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