AstraZeneca has announced the results from its long-awaited US-based clinical trial, saying that its COVID-19 vaccine is safe and provides strong protection against symptomatic infection.
AstraZeneca Says Its Vaccine Is 76% Effective Against COVID-19
WBZ CBS Boston
While the drug maker AstraZeneca has revised its analysis of a large clinical trial involving its new COVID-19 vaccine, WBZ-TV's..
