COVID-19: epidemiological update. Weekly report. Week 23. 16 June 2022.

Publié le 17 juin 2022
Mis à jour le 17 juin 2022

Key points

In week 23, circulation of SARS-CoV-2 accelerated throughout metropolitan France, with significant growth in virological indicators. An increasing trend in hospital admissions was also observed.

  • Metropolitan France:
    • Sharp increase in incidence rate* in all age groups
    • Particularly striking increase in positivity rate among 20-59 year-olds (+5 points)
    • Rate of new hospital admissions rising in certain regions, particularly in Île-de-France
  • Overseas France:
    • Virological indicators still rising and at very high levels in Martinique
    • Continued rise in incidence rate* in French Guiana


  • Omicron BA.2 sub-lineages still dominant: 72% of interpretable sequences in the week 22 Flash Survey (30 May)
  • Detection of BA.4 (3.7%) and BA.5 (24.2%) on the rise
  • Increased presence of the mutation in L452 position in screening (46% in week 23 vs. 28% in week 22), in connection with the increase in certain Omicron sublineages, including BA.4 and BA.5.


  • Vaccination on 13 June 2022 (Vaccin Covid data):
    • Vaccination coverage for the booster shot reached 74.5% among adults over 18 years of age and 84.4% in the 65+ age group.
    • Only 29.1% of 60-79 year-olds and 29.2% of those aged 80 and over eligible for the second booster shot have actually received it.
  • With the accelerating circulation of SARS-CoV-2, adopting combined measures is essential, particularly to protect the most vulnerable populations:
    • It remains important to self-isolate in the event of symptoms or a positive test for COVID-19
    • It is crucial to step up individual precautions against infection, including wearing a mask (especially in closed areas, at large gatherings or around vulnerable people) and hand washing. During this early heat wave, closed areas should only be aired in the cooler hours of the day.

*Rate corrected for the effect of the public holiday (26 May 2022).