COVID-19: Epidemiological Update as of May 31, 2023

Key Points

In Week 21, virological indicators (based on SI-DEP data) stabilized amid very low testing rates. Emergency room visits also stabilized, and new hospitalizations continued to decline.

  • Mainland France:

    • Incidence and positivity rates slightly increasing or stable in most age groups and regions

    • Rate of new hospitalizations decreasing in most regions

  • Overseas territories:

    • Incidence rates are decreasing in most regions

    • New hospitalizations remain at a low level

Variants

  • The XBB.1.5 recombinant remained the dominant variant but appeared to be declining, accounting for 45% of sequences in the Flash S19* survey (vs. 47% in Flash S18)

  • XBB.1.16 on the rise (6% for Flash S19* vs. 3% for Flash S18)

  • XBB.1.9 stabilized (28% in Flash S19* vs. 29% in Flash S18)

Prevention

  • Vaccination as of May 29, 2023 (Covid Vaccine data):

    • 23.9% of those aged 60–79 and 27.0% of those aged 80 and older had received a booster tailored to the Omicron variant

  • Given the current state of the epidemic and the spring vaccination campaign, it remains recommended to continue adhering to the following combined measures:

    • up-to-date COVID-19 vaccination, including a booster dose for those eligible who have received their primary series;

    • continued adherence to preventive measures, particularly in the event of a positive test and/or symptoms, to protect vulnerable individuals.

*Data from the Flash S19 survey are preliminary and should be interpreted with caution.

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