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CDC Study Shows Delta Variant Reduces COVID Vaccine Efficacy
ByTWC - Digital (No Distro)•
October 22, 2021Updated: October 22, 2021, 10:39 am EDTPublished: August 25, 2021, 10:16 am EDT

The CDC found vaccine efficacy dropped from 91 percent to 66 percent after the strain became dominant in the U.S.

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