The Moderna vaccine showed no decline over the same period.If the efficacy gap continues to widen, it may have implications for the debate on booster shots....
Immunity wanes more quickly in older adults, so a decline observed in a group consisting mostly of older adults may give the false impression that the protection from the Pfizer-BioNTech vaccine falls off quickly. Given those caveats," I'm not convinced that there truly is a difference," said Dr....
Bill Gruber, a senior vice president
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2021-09-23 00:00:00.0