Influenza Epidemiological Bulletin, Week 5. 2021–2022 Season.

Key points

  • In mainland France:

    • Increase in flu indicators, with regional disparities persisting

    • Significant increase in the positivity rate for influenza viruses in community practice, with continued co-circulation of the A(H1N1)pdm09 and A(H3N2) viruses

    • Further increase in emergency room visits and hospitalizations, particularly among children under 5

  • In the Overseas Territories:

    • French Guiana has entered the epidemic phase, while the epidemic has ended in Mayotte

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