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abstractpubmed· Abstract 2021· item PMID:33769253

Detecting Rapid Spread of SARS-CoV-2 Variants, France, January 26-February 16, 2021. Variants of severe acute respiratory syndrome coronavirus 2 raise concerns regarding the control of coronavirus disease epidemics. We analyzed 40,000 specific reverse transcription PCR tests performed on positive samples during January 26-February 16, 2021, in France. We found high transmission advantage of variants and more advanced spread than anticipated.