COVID-19(158) SARS-CoV-2(158) supported(94) acute respiratory syndrome(85) Vaccine(75) coronavirus(75) funding(72) Infection(70) vaccination(67) coronavirus disease(65) finding(64) Context(62) variant(60) individual(58) Abstract(58) virus(55) Neutralizing(54) antibody(52) neutralizing antibody(50) reduced(48) foundation(45) Coronavirus disease 2019(41) center(41) pandemic(41) omicron(39) viral infection(39) dose(38) Support(37) Cohort(37) variants(37)