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Boosters Effectively Fend Off Delta, Omicron Variants in Studies
Posted
January 22, 2022
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January 22, 2022
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1:17Now PlayingBooster doses of Covid-19 vaccines increased protection against both the delta and omicron variants in three studies that looked at infections, hospital admissions and deaths in thousands of U.S. patients.
Third doses of messenger RNA vaccines made by Moderna Inc. and the partnership of Pfizer Inc. and BioNTech SE were at least 90% effective in preventing hospitalizations during both the delta and omicron periods, according to an analysis of hundreds of thousands of hospitalizations and clinic visits. The shots’ protection against Covid deaths was diminished after omicron’s rise, but remained significant, according to a separate study from the U.S. Centers for Disease Control and Prevention.
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