COVID-19 boosters are safe and increase immunity when given after two doses of AstraZeneca or Pfizer, trial shows
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3 December 2021COVID-19 boosters are safe and increase immunity when given after two doses of AstraZeneca or Pfizer, trial shows
Six different COVID-19 boosters are safe and provoke strong immune responses in people who have previously received a two-dose course of ChAdOx1-nCov19 (Oxford–AstraZeneca [ChAd]) or BNT162b2 (Pfizer-BioNTech [BNT]), according to the first randomised trial of boosters given after two doses of either vaccine, published in The Lancet.
