The vaccine, previously known as ChAdOx1 nCoV-19 and now as AZD1222, was developed by the University of Oxford and licensed to AstraZeneca. Immunity to the new coronavirus is uncertain and so the use of vaccines is unclear.source https://timesofindia.indiatimes.com/world/us/us-secures-300-million-doses-of-potential-astrazeneca-covid-19-vaccine/articleshow/75887243.cms
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