Spacing Pfizer Covid-19 shots boosts antibody levels after initial drop: Study squib

July 23, 2021 7:23 AM

LONDON (REUTERS) - A longer gap between doses of Pfizer's Covid-19 vaccine leads to higher overall antibody levels than a shorter gap, a British study found on Friday (July 23), but there is a sharp drop in antibody levels after the first dose.
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