News > Explained: What is the latest efficacy data of AstraZeneca vaccine; what it means?
Explained: What is the latest efficacy data of AstraZeneca vaccine; what it means?
Indian Express | 22/03/2021 07:00 PM | Click to read full article
According to The University of Oxford and AstraZeneca, interim results from phase 3 clinical trials conducted on 32,000 participants across the US, Chile, and Peru show that the vaccine had an efficacy of 79 percent against symptomatic Covid-19. The efficacy in the cases of critical symptomatic Covid-19 was 100 percent. This means that the possibility of getting symptoms reduced by 79 percent in those vaccinated in these trials compared with those who weren’t vaccinated.