- Investigational AstraZeneca vaccine prevents COVID-19 | National Institutes of HealthNational Institutes of Health
- AstraZeneca vaccine is 79% effective against symptomatic Covid-19, company saysCNN
- AstraZeneca’s Covid-19 Vaccine Is Found to Be 79% Effective in U.S. StudyThe New York Times
- New surge in COVID-19 pandemic accelerates internationally – World Socialist Web SiteWSWS
- N.Y. Lowering Vaccination Age to 50; N.J. Pauses: Virus UpdateBloomberg
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