Contraindications and Precautions
Precautions to any COVID-19 vaccine include:
- History of an immediate allergic reaction to any non-COVID-19 vaccine or injectable therapy (i.e., intramuscular, intravenous, or subcutaneous vaccines or therapies)
- Moderate or severe acute illness
People with a history of a non-severe, immediate (onset less than 4 hours) allergic reaction after a dose of one type of COVID-19 vaccine (i.e., mRNA or Janssen) have a precaution to the same type of COVID-19 vaccine.
People with a contraindication to one type of COVID-19 vaccine have a precaution to the other type of COVID-19 vaccine (e.g., people with a contraindication to an mRNA COVID-19 vaccine have a precaution to Janssen COVID-19 vaccine and vice versa).
When applicable, consider conducting a risk assessment or referral to an allergist-immunologist to help with vaccination decision-making.