1. Previous booster after vaccination with Johnson & Johnson?derStandard.at
  2. After vaccination breakthroughs – France investigates protection from Johnson & JohnsonKronen newspaper
  3. Johnson & Johnson bei Delta unwirksam?  Today.at – news and headlines
  4. Corona vaccination: does Johnson & Johnson protect well enough?VIENNA.AT
  5. See “More on Topic” in Google News

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