• COVID-19
  • Contraindications & Precautions

If a patient had an anaphylactic reaction to an mRNA COVID-19 vaccine two years ago, can they ever be vaccinated against COVID-19?

History of an anaphylactic reaction to a dose of mRNA COVID-19 vaccine is a contraindication to receipt of further doses of mRNA-type COVID-19 vaccines. However, a person with a contraindication to one type of COVID-19 vaccine (mRNA) may receive the alternative COVID-19 vaccine type (in this case, the adjuvanted protein subunit vaccine by Novavax) in the usual vaccination setting. CDC encourages consultation with an allergist-immunologist to provide expert evaluation of the original allergic reaction, and depending on the outcome of that evaluation, reassess whether administration of additional doses of the original vaccine type may be possible.

Last reviewed: March 19, 2024

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