Oxford-AstraZeneca, Moderna Inc, Pfizer Inc-BioNTech and Chinese firm Sinovac are all undergoing Phase III trials at present for developing Covid-19 vaccine.. These four are prime candidates for developing vaccine
Oxford-AstraZeneca, Moderna Inc, Pfizer Inc-BioNTech and Chinese firm Sinovac are all undergoing Phase III trials at present for developing Covid-19 vaccine.. These four are prime candidates for developing vaccine