This article is 3 years old
Mixed AstraZeneca-Pfizer shot boosts Covid-19 antibody level - study
A mixed vaccination of first AstraZeneca and then a Pfizer Covid-19 shot boosted neutralising antibody levels by six times compared with two AstraZeneca doses, a study from South Korea showed.
The study involved 499 medical workers - 100 receiving mixed doses...
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