Watch CBS News

U.S. study finds AstraZeneca COVID vaccine 79% effective

Name: U.S. study finds AstraZeneca COVID vaccine 79% effective
Uploaded: 2021-03-22T18:35:24-0400
Duration: 2 min 40 s
Description: AstraZeneca announced its coronavirus vaccine is 79% effective in U.S. clinical trials and 100% effective in preventing serious illness. Meg Oliver reports.

AstraZeneca announced its coronavirus vaccine is 79% effective in U.S. clinical trials and 100% effective in preventing serious illness. Meg Oliver reports.