Several SARS-CoV-2 variants have been identified since the beginning of the COVID-19 pandemic: Alpha (B.1.1.7 and Q lineages) Beta (B.1.351 and descendent lineages) Gamma (P.1 and descendent lineages) Epsilon (B.1.427 and B.1.429) Eta (B.1.525) Iota (B.1.526) Kappa (B.1.617.1) 1.617.3 Mu (B.1.621, B.1.621.1) Zeta (P.2) On November 30, 2021, the U.S. government SARS-CoV-2 Interagency Group (SIG) […]