• CDC says "You may choose which COVID-19 vaccine you receive as a booster shot. Some people may prefer the vaccine type that they originally received, and others may prefer to get a different booster. CDC’s recommendations now allow for this type of mix and match dosing for booster shots. " Dr. Gregory Poland, head of Mayo Clinic's Vaccine Research Group says "People who responded well to the first vaccine with minimal side effects can choose to get the same brand for their booster vaccination. But there are reasons someone might choose a different vaccine. For example, a younger man who initially got the Moderna or Pfizer vaccine might want a J&J booster, because the mRNA vaccines are linked with a slight risk of heart inflammation called myocarditis. And a woman under age 50 might prefer to get a Moderna or Pfizer booster, because the J&J vaccine is linked with a slightly higher risk of a rare blood clotting condition in younger women." Robert F. Kennedy, Jr. says "Even if this was the deadly disease that they say it is, there's worse things than death."
  • In the UK, the booster vaccine is all Pfizer.
  • only ask a doctor
  • the CDC says either is ok but I would stick to the same as my first
  • I think the CDC says you can mix & match vaccines including the booster. CDC is short for Center for Disease Control.
  • Depends what you had first. There are two types of covid vaccine. The mRNA and the viral vector. If you had two of one, then get a booster of the other.

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