New AstraZeneca report says vaccine was 76% effective in preventing Covid-19 symptoms

Drug giant AstraZeneca updated its data on how well its coronavirus vaccine works, saying late Wednesday the vaccine showed 76% efficacy against symptomatic coronavirus disease and 100% efficacy against severe or critical disease or the need for hospitalization.Drug giant AstraZeneca updated its data on how well its coronavirus vaccine works, saying late Wednesday the vaccine showed 76% efficacy against symptomatic coronavirus disease and 100% efficacy against severe or critical disease or the need for hospitalization.