Influenza Epidemiological Bulletin, Week 4. 2021–2022 Season.

Key points

  • In mainland France:

    • Flu indicators have stabilized, though regional disparities remain

    • Increase in indicators in Provence-Alpes-Côte d’Azur and Corsica, justifying the transition to the pre-epidemic phase for Corsica

    • Co-circulation of influenza A(H1N1)pdm09 and A(H3N2) viruses

  • In the overseas territories: stable indicators in French Guiana

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