Influenza Epidemiological Bulletin, Week 4. 2022–2023 Season.

Key points

  • In mainland France:

    • Increased circulation of influenza viruses, predominantly type B/Victoria

    • Increase in flu indicators across all age groups, particularly among 5- to 14-year-olds and 15- to 64-year-olds

    • Ten out of thirteen regions still experiencing an epidemic

  • In the overseas territories:

    • Réunion and Mayotte: indicators have returned to baseline levels

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