 Ebisara na 8:04 13 Disemba 20208:04 13 Disemba 2020 Mba Amerịka ga-ebido inye ọgwụ mgbochi Pfizer coronavirus bido na mọnde John CairnsUniversity of OxfordPACopyright: John CairnsUniversity of OxfordPA Ndị mba US ga-ebido ịnata ọgwụ mgbochi PfizerBioNTech maka coronavirus bido na mọnde bụ December iri na anọ dịka e kpebichara ị ji ya rụọ ọrụ. 