London : As per reports, the coronavirus vaccine developed by the University of Oxford has been proven between 70-90 percent effective at preventing Covid-19 infection. The tests covering some 20000 volunteers in the UK and Brazil pointed 70 percent protection, which may increase to 90 percent if doses are increased. Prof. Andrew Pollard, Trials's Chief Investigator said that the volunteers were given a half-sized first dose and a full-sized second dose. The government has bought 1000 million doses of the vaccine which will be produced by AstraZeneca. But it requires regulatory approval before being handed out to the public.
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