has function has role has component vaccinated in route immunizes against disease immunizes recipient immunizes against pathogen COVID-19 Severe acute respiratory syndrome coronavirus 2 Homo sapiens spike glycoprotein (SARS-CoV-2) intramuscular route preventive vaccine function prophylactic vaccine Oxford-AstraZeneca COVID-19 vaccine SARS-COV-2 (COVID-19) vaccine, vector non-replicating, recombinant spike protein-ChAdOx1, preservative free, 0.5 mL 5774 724905 AZD1222 Covishield https://en.wikipedia.org/wiki/AZD1222 Anthony Huffman A SARS-CoV2 recombinat vector vaccine made of a chimpanzee adenovirus-vectored vaccine expressing the SARS-CoV-2 spike protein Philip Huang PMID:32702298 210 ChAdOx1 nCoV-19 COVID-19 Vaccine AstraZeneca vaccine COVID-19 vaccine, vector-nr, rS-ChAdOx1, PF, 0.5 mL VIOLIN: https://violinet.org/vaxquery/vaccine_detail.php?c_vaccine_id=5774 chimpanzee adenovirus Oxford1 vaccine vector authorized COVID-19 recombinant adenoviral vector vaccine authorized vaccine role