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© Research
Publication : Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin

Early assessment of diffusion and possible expansion of SARS-CoV-2 Lineage 20I/501Y.V1 (B.1.1.7, variant of concern 202012/01) in France, January to March 2021.

Team: Mathematical Modelling Of Infectious Diseases
Member: Simon Cauchemez
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin - 01 Mar 2021

Gaymard A, Bosetti P, Feri A, Destras G, Enouf V, Andronico A, Burrel S, Behillil S, Sauvage C, Bal A, Morfin F, Van Der Werf S, Josset L, , , Blanquart F, Coignard B, Cauchemez S, Lina B,

Link to Pubmed [PMID] – 33663644

Link to DOI – 10.2807/1560-7917.ES.2021.26.9.2100133

Euro Surveill 2021 03; 26(9):

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.