Man in booster trial who got Pfizer then Moderna COVID-19 shots – Business Insider
Scientists in the US are starting a booster shot trial, giving fully vaccinated people another jab.
Participants are given a booster shot of the Moderna vaccine — whether they previously got 2 shots of an mRNA vaccine (from Pfizer or Moderna) or 1 adenovirus (J&J) shot.
One participant told Insider his booster dose of Moderna gave him similar side effects to his second Pfizer shot, but the third was "a little bit more severe."
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