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Moderna says COVID-19 booster shot appears effective against Omicron variant

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Moderna says COVID-19 booster shot appears effective against Omicron variant

December 20, 2021

Moderna said on Monday that a booster dose of its COVID-19 vaccine appeared to be protective against the Omicron variant in laboratory testing. They said a 50 microgram booster dose increased neutralizing antibodies against the variant 37-fold, with a higher, 100-mcg dose driving antibody levels more than 80 times pre-boost levels.

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