Influenza Epidemiological Bulletin, Week 41. 2021–2022 Season.

Key points

  • In mainland France:

    • Baseline levels of flu-like illness indicators

    • detection of sporadic cases of confirmed influenza since early September

  • Overseas territories: active circulation of influenza viruses of subtype A(H3N2) in Mayotte, in the pre-epidemic phase since week 40

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