- AstraZeneca says its COVID-19 vaccine needs ‘additional study’Al Jazeera English
- AstraZeneca Faces Difficult Questions About Its Vaccine After Admitting MistakeThe New York Times
- Operation Warp Speed head may leave before most Americans vaccinated – Business InsiderBusiness Insider
- COVID expert Peter Hotez: ‘I’ll take the first FDA-authorized vaccine offered’Houston Chronicle
- Americans should be warned of coronavirus vaccine side effects, medical experts sayFox News
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