What to Know About the World’s Top Covid-19 Vaccines
Oxford-AstraZeneca Efficacy: 62-90%, depending on dose Dose: 2 doses, 4 weeks apart Storage: Stable in refrigerator for at least 6 months
Authorized so far in Britain, India and several other countries, this shot is cheap and easily stored, raising hopes that it could protect most of the world. Many scientists were puzzled, however, by data showing that its efficacy may depend on the strength of the initial dose or the gap between doses.
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January 12, 2021 at 09:06PM
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What to Know About the World's Top Covid-19 Vaccines - The New York Times
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