SARS-CoV-2 B.1.1.420 and B.1.617.1 immune escape variants reported in France

Since its emergence in Wuhan, China, in December 2019, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent of COVID-19 (coronavirus disease 2019), is rapidly spreading, with numerous variants being observed around the world. A high transmission rate would indicate an undergoing process of positive selection of variants, which might allow the virus to acquire some advantageous genetic traits. […]
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