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Delaying second Pfizer COVID-19 shot boosts immune response in over-80s, study finds

·3 min read
Delaying second Pfizer COVID-19 shot boosts immune response in over-80s, study finds
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Extending the gap between doses of the Pfizer–BioNTech COVID-19 vaccine from three to 12 weeks significantly boosts the antibody response in elderly people, according to a new U.K. study.