- AstraZeneca: US data shows vaccine effective for all agesAssociated Press
- AstraZeneca, once touted as a pandemic slayer, faces challengesThe Washington Post
- AstraZeneca vaccine is 79% effective against symptomatic Covid-19, company saysCNN
- Covid-19 Pandemic: Live Updates and News for March 22, 2021Bloomberg
- AstraZeneca vaccine found to be 79% effective in U.S. trial, ‘no increased risk’ of blood clotsCNBC
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