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U.S. health officials raise concerns over Astrazeneca data
U.S. health officials question AstraZeneca trial data amid push to speed up vaccinations
AstraZeneca trial results raise questions for U.S. health officials
U.S. health officials cast doubt over AstraZeneca trial results
U.S. experts raise concerns about Astrazeneca's results
Health panel rebukes AstraZeneca over "outdated" trial data
U.S. health safety board raises concern about latest AstraZeneca vaccine data
Doctor on U.S. health officials questioning AstraZeneca vaccine clinical trial results
US health officials and AstraZeneca hold briefing on Covid vaccine trial – watch live
New Concerns Raised About AstraZeneca Vaccine | TODAY
US officials question AstraZeneca COVID-19 vaccine trial results
Health Experts Question Efficacy Results Of U.S. AstraZeneca Trial | NBC News NOW
