Influenza Epidemiological Bulletin, Week 49. 2021–2022 Season.

Key points

  • In mainland France:

    • Flu indicators are trending upward for the fourth consecutive week, at levels comparable to those typically observed at this time of year

    • Two regions in the pre-epidemic phase: Île-de-France and Occitanie

  • In the overseas territories:

    • Réunion: pre-epidemic phase maintained since week 46

    • Mayotte: has remained in the epidemic phase since week 42

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