AstraZeneca's U.S. trial shows vaccine is 79 percent effective March 22, 2021 +1 000 volunteers and is a boost for the troubled vaccine. Europe IFTTT NYT NYTimes The U.S. trial included 32 000 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 +1 000 volunteers and is a boost for the troubled vaccine. Europe IFTTT NYT NYTimes The U.S. trial included 32 000 volunteers and is a boost for the troubled vaccine. Europe IFTTT NYT NYTimes The U.S. trial included 32