AstraZeneca's COVID-19 vaccine has now been found to be slightly less effective than previously thought.
AstraZeneca's COVID-19 vaccine has now been found to be slightly less effective than previously thought.
While the drug maker AstraZeneca has revised its analysis of a large clinical trial involving its new COVID-19 vaccine, WBZ-TV's..
JOHNS HOPKINS REPORTS 1,000 PEOPLE ARE STILL DYING EVERY DAY, A SOBERING REMINDER THE VIRUS IS STILL HERE AND STILL DEADLY.