Increased transmissibility and global spread of SARS-CoV-2 variants of concern as at June 2021
Finlay Campbell(World Health Organization), Brett N. Archer(World Health Organization), Henry Laurenson‐Schafer(World Health Organization), Yuka Jinnai(World Health Organization), Frank Konings(World Health Organization), Neale Batra(World Health Organization), Boris Pavlin(World Health Organization), Katelijn Vandemaele(World Health Organization), Maria D. Van Kerkhove(World Health Organization), Thibaut Jombart(London School of Hygiene & Tropical Medicine), Oliver Morgan(World Health Organization), Olivier le Polain de Waroux(World Health Organization)
Cited by 963Open Access
Abstract
We present a global analysis of the spread of recently emerged SARS-CoV-2 variants and estimate changes in effective reproduction numbers at country-specific level using sequence data from GISAID. Nearly all investigated countries demonstrated rapid replacement of previously circulating lineages by the World Health Organization-designated variants of concern, with estimated transmissibility increases of 29% (95% CI: 24-33), 25% (95% CI: 20-30), 38% (95% CI: 29-48) and 97% (95% CI: 76-117), respectively, for B.1.1.7, B.1.351, P.1 and B.1.617.2.
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