Delaying Second Pfizer Vaccine Effective in Older Adults, Study Shows
June 11, 2021 | Aging Services Risk Management
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What's the news. Antibody responses after the second dose of the COVID-19 Pfizer vaccine peaked when the shot was delayed from 3 weeks to 12 weeks, although cellular responses are lower, according to a UK study of adults over the age of 80 published May 17, 2021, in medRxiv.