COVID-19: epidemiological update. Weekly report. Week 15. 19 April 2023.

Publié le 20 avril 2023
Mis à jour le 20 avril 2023

Key points

In week 15, the positivity rate (based on SI-DEP virological data) continued to increase in a context of very low screening rates. Emergency department visits were on the rise, while new hospital admissions were decreasing.

  • Metropolitan France:
    • Incidence and positivity rates rising in most age groups and regions
    • Hospital admission rate decreasing in majority of regions
  • Overseas France:
    • Incidence rate increasing in most regions
    • Hospital admissions remain very low

Variants

  • The recombinant XBB.1.5 appeared to stabilise with 57% of sequences in the week 13 Flash Survey
  • The BQ.1 sub-lineage continued to decrease (5% in the week 13 Flash Survey vs 7% in week 12)

Prevention

  • Vaccination on 17 April 2023 (Vaccin Covid data):
    • 23.6% of 60-79 year-olds and 26.3% of 80+ year-olds had received a booster dose adapted to the Omicron variant
    • 23.0% of 60-79 year-olds had received a dose of vaccine in the last 6 months and 4.0% of 80+ year-olds in the last 3 months
  • Given that SARS-CoV-2 remains in active circulation, continued compliance with preventive measures is recommended:
    • up-to-date COVID-19 vaccination, including a booster dose of bivalent vaccine (protecting against the original strain and the Omicron variant) for eligible individuals already vaccinated with a primary series;
    • continued application of precautionary measures, particularly in case of a positive test and/or symptoms, to protect vulnerable individuals.