Six different COVID-19 boosters are safe and increase immunity when given after two doses of AstraZeneca or Pfizer-BioNTech, with significant variations in immune responses, UK trial shows.

News Release: Six different COVID-19 boosters are safe and increase immunity when given after two doses of AstraZeneca or Pfizer-BioNTech, with large variations in immune responses, UK trial shows – The Lancet

Original Study: Safety and immunogenicity of seven COVID-19 vaccines as a third dose (booster) following two doses of ChAdOx1 nCov-19 or BNT162b2 in the UK (COV-BOOST): a blinded, multicentre, randomised, controlled, phase 2 trial – The Lancet

Commentaries:

Six different COVID-19 boosters induce variable immune response – CIDRAP

Covid booster shots significantly strengthen immunity, trial finds – The Guardian

Expert reaction to COV-BOOST study investigating safety and immunogenicity of seven COVID-19 vaccines as a third dose following two doses of either Oxford-AstraZeneca or Pfizer – Science Media Centre

Commentary on Twitter

NEW—Six different COVID-19 boosters are safe and increase immunity when given after two doses of #AstraZeneca or #Pfizer-BioNTech, with large variations in immune responses, UK trial shows. https://t.co/ktUp1m2Rsb pic.twitter.com/wlwxcLYDm1

— The Lancet (@TheLancet) December 2, 2021