Eurosurv. Increased transmissibility and global spread of SARS-CoV-2 variants of concern as at June 2021

[tetano]

• Finlay Campbell[SUP]1[/SUP] , Brett Archer[SUP]1[/SUP] , Henry Laurenson-Schafer[SUP]1[/SUP] , Yuka Jinnai[SUP]1[/SUP] , Franck Konings[SUP]1[/SUP] , Neale Batra[SUP]1[/SUP] , Boris Pavlin[SUP]1[/SUP] , Katelijn Vandemaele[SUP]1[/SUP] , Maria D Van Kerkhove[SUP]1[/SUP] , Thibaut Jombart[SUP]1,2,3[/SUP] , Oliver Morgan[SUP]1[/SUP] , Olivier le Polain de Waroux[SUP]1 [/SUP]

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.

full article

https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2021.26.24.2100509#html_fulltext