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Booster dose of six Covid vaccines safe, increases immunity: Lancet study

New Delhi: Six different COVID-19 boosters are safe and elicit a strong immune response in people who have previously received a two-dose course of AstraZeneca or Pfizer vaccines, according to a study published in The Lancet journal. Two doses of AstraZeneca and Pfizer vaccines have shown 79 per cent and 90 per cent protection, respectively, against […]