AstraZeneca, Pfizer vaccine recipients may need booster doses3 min read . Updated: 28 Jul 2021, 05:34 AM IST
Further research will be important to establish if there is an antibody level threshold needed for protection against severe covid
Coronavirus antibody levels start declining from as early as six weeks after complete vaccination with Pfizer and AstraZeneca jabs and can reduce by more than half over 10 weeks, pointing to the need for booster doses, according to University College London (UCL) researchers.
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