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Gaymard, Alexandre; Bosetti, Paolo; Feri, Adeline; Destras, Gregory; Enouf, Vincent; Andronico, Alessio; Burrel, Sonia; Behillil, Sylvie; Sauvage, Claire; Bal, Antonin; Morfin, Florence; Van Der Werf, Sylvie; Josset, Laurence; Blanquart, François; Coignard, Bruno; Cauchemez, Simon; Lina, Bruno
Euro surveillance : bulletin européen sur les maladies transmissibles, 03/2021, Volume: 26, Issue: 9Journal Article
The emergence of SARS-CoV-2 variant 20I/501Y.V1 (VOC-202012/1 or GR/501Y.V1) is concerning given its increased transmissibility. We reanalysed 11,916 PCR-positive tests (41% of all positive tests) performed on 7-8 January 2021 in France. The prevalence of 20I/501Y.V1 was 3.3% among positive tests nationwide and 6.9% in the Paris region. Analysing the recent rise in the prevalence of 20I/501Y.V1, we estimate that, in the French context, 20I/501Y.V1 is 52-69% more transmissible than the previously circulating lineages, depending on modelling assumptions.
