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    A study of COVID vaccine boosters suggests Moderna or Pfizer works best

    Should people who get a COVID booster get a different vaccine from their original shot? The results of a highly anticipated study suggest that in some cases the answer may be yes.
    by Rob Stein Oct 13, 2021 3 minutes
    A study by the National Institutes of Health this week suggests people who got the J&J vaccine as their initial vaccination against the coronavirus may get their best protection from choosing an mRNA vaccine as the booster.

    If you got the Johnson & Johnson vaccine as your first COVID-19 shot, a booster dose of either the Moderna or Pfizer-BioNTech vaccine apparently could produce a stronger immune response than a second dose of J&J's vaccine. That's the finding of a highly anticipated study released Wednesday.

    And if you started out with either Pfizer or Moderna, it probably doesn't matter that much, the research suggests, as long as you get one of the

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