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AstraZeneca says trial data from U.S. study on its COVID-19 vaccine shows it's 79% effective
AstraZeneca says US trial data shows vaccine 79% effective
AstraZeneca U.S. president explains trial data, plans for filing for U.S. approval
U.S. health officials question AstraZeneca trial data amid push to speed up vaccinations
Health Experts Question Efficacy Results Of U.S. AstraZeneca Trial | NBC News NOW
AstraZeneca U.S. trial data gives vaccine a boost
AstraZeneca's executive vice president on new vaccine trial data
AstraZeneca says US trial data shows vaccine 79% effective
US data: AstraZeneca vaccine 79% effective
AstraZeneca may have "included outdated information" in COVID-19 vaccine trial report
U.S. trial: AstraZeneca vaccine 79% effective as TN moves into phase 2a and 2b
U.S. AstraZeneca Trial Finds Vaccine Is 79 Percent Effective Against Covid | NBC News NOW