Journal article
2021-05-29T00:00:00+00:00
397
2043 - 2046
3
BNT162 Vaccine, COVID-19, COVID-19 Vaccines, ChAdOx1 nCoV-19, Cross Protection, Humans, Immunity, Heterologous, Immunization, Secondary, Immunogenicity, Vaccine, Mass Vaccination, SARS-CoV-2