Subjects: *COVID-19 vaccines; *COVID-19; *COST effectiveness
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Subjects: VIRAL vaccines; COVID-19 vaccines; SARS-CoV-2 Omicron variant
Subjects: COVID-19 pandemic; COVID-19 vaccines; SARS-CoV-2SOUTH Korea
Subjects: MEDICAL personnel; COVID-19; COVID-19 pandemic
Subjects: COVID-19; COVID-19 pandemic; PASSPORTS
Subjects: *SARS-CoV-2; *COVID-19 vaccines; *COVID-19 pandemicNEW Zealand
Subjects: *COVID-19 pandemic; *SARS-CoV-2; *COVID-19 vaccinesEUROPE
Subjects: BIDEN, Joe, 1942-; LABOR Day; PFIZER Inc.
Subjects: PFIZER Inc.; UNITED States. Food & Drug Administration; COVID-19 vaccines
Subjects: COVID-19; BOOSTER vaccines; SARS-CoV-2ENGLAND