SARS-CoV-2(136) variant(87) Infection(59) COVID-19(55) Vaccine(52) individual(50) SARS-CoV-2 variant(47) variants(47) coronavirus(46) omicron(44) antibody(38) Beta(38) Spread(38) acute respiratory syndrome(37) Mutation(37) SARS-CoV-2 variants(36) Delta(35) neutralization(32) the SARS-CoV-2(32) VoC(32) Lineage(30) SARS-COV-2 infection(30) Spike protein(29) circulating(27) B.1.1.7(27) neutralizing antibody(26) the spike protein(26) Surveillance(26) variants of concern(26) reported(25)