Global Expansion of SARS-CoV-2 Variants of Concern: Dispersal Patterns and Influence of Air Travel
Description
In many regions of the world, the Alpha, Beta and Gamma SARS-CoV-2 Variants of Concern (VOCs) co-circulated during 2020-21 and fueled waves of infections. During 2021, these variants were almost completely displaced by the Delta variant, causing a
