AstraZeneca, Pfizer vaccine antibody levels may decline after 2-3 months: Lancet study
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As the world is hoping for a vaccine resolution to the COVID-19 crisis, a Lancet study definitely brings little cheer. According to a study in the journal, the total antibody levels start to wane six weeks after complete immunisation with Pfizer and AstraZeneca vaccines, and can reduce by more than 50% over 10 weeks. The Oxford–AstraZeneca COVID-19 vaccine is sold under the brand name Covishield in India.