AstraZeneca Vaccine Is Effective Against COVID-19, Phase III Study Says

Early results from an Oxford-AstraZeneca trial, which involved more than 32,000 volunteers, showed two doses of the vaccine administered four weeks apart had an efficacy of 79% at preventing symptoms of COVID-19.

Early results from an Oxford-AstraZeneca trial, which involved more than 32,000 volunteers, showed two doses of the vaccine administered four weeks apart had an efficacy of 79% at preventing symptoms of COVID-19.

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