COVID-19: epidemiological update. Weekly report. Week 47. 2 December 2021.

Publié le 3 décembre 2021
Mis à jour le 3 décembre 2021

Key points

In week 47, another sharp rise in SARS-CoV-2 was observed metropolitan France, along with a surge in new hospital and intensive care admissions.

  • Metropolitan France:
    • Incidence rate above 300/100,000 inhabitants among those under 50 years (>600 among 6-10 year-olds)
    • New hospital and intensive care admissions increasing in almost all regions
  • Overseas France: Reunion Island: continued high incidence rate with intensive care admissions slightly increasing


  • Delta variant identified in more than 99% of sequenced samples in the Flash Survey from week 45 (8-10 November)
  • Eight confirmed cases of Omicron variant in France as of 2 December at 4 pm

Contact tracing

  • Lower proportion of new cases linked to known transmission chains
  • Fewer people aged 65 years and over among cases and contacts


  • 30 November 2021 (Vaccin Covid data):
    • 77.4% of the French population had received at least one vaccine dose, and 75.8% were fully vaccinated
    • 42.9% of people aged 65 years and older had received a booster shot, representing 78.5% of the eligible population in this age group
  • Severe cases hospitalised in intensive care between 1 September and 30 November:
    • 76% of people under 65 years were unvaccinated or incompletely vaccinated
    • 34% of people aged 65 years and older were vaccinated but only 1.4% had received a booster dose
  • Importance of combining measures: vaccination, including the booster shot for the eligible population, contact tracing, and preventive measures