AstraZeneca says U.S. data show its vaccine is effective for all adults
The company said its COVID-19 vaccine had a 79% efficacy rate at preventing symptomatic COVID-19 and was 100% effective in stopping severe disease and hospitalization.
Medical staff members administer the AstraZeneca vaccine in Rome on Friday.Read moreGregorio Borgia
by Maria Cheng and Lauran Neergaard, The Associated Press
