Influenza Epidemiological Bulletin, Week 51. 2021–2022 Season.

Key points

  • In mainland France:

    • Flu indicators continue to rise, particularly among children

    • The Ile-de-France region has entered the epidemic phase, and five new regions are in the pre-epidemic phase: Brittany, Grand Est, Hauts-de-France, Pays de la Loire, and PACA

    • Significant increase in emergency room visits and hospitalizations following visits for flu-like symptoms among children under 15

  • In the Overseas Territories:

    • Saint-Barthélemy: has entered the pre-epidemic phase

    • Réunion and Mayotte are in the epidemic phase

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