AstraZeneca's U.S. trial shows vaccine is 79 percent effective March 22, 2021 000 volunteers and is a boost for the troubled vaccine. Europe IFTTT NYT NYTimes The U.S. trial included 32 +
AstraZeneca's U.S. trial shows vaccine is 79 percent effective March 22, 2021 000 volunteers and is a boost for the troubled vaccine. Europe IFTTT NYT NYTimes The U.S. trial included 32 +