I had a severe allergic reaction (anaphylaxis) after my mRNA vaccine. Can I get another dose?

Question: 

I had a severe allergic reaction (anaphylaxis) after my mRNA vaccine. Can I get another dose?

Answer: 
Severe allergic reactions after mRNA vaccines are very rare. According to the National Advisory Committee on Immunization, recent studies have shown that most of the people who had these reactions after a previous dose of mRNA vaccine can be safely re-vaccinated with the same vaccine or another mRNA COVID-19 vaccine. Re-vaccination was safe and almost no reactions or only mild reactions happened after re-vaccination. 
 
Although the risk of a severe immediate allergic reaction after re-vaccination appears to be low, it’s important to do the following: 
 
  • Consult with an allergist or other appropriate physician before re-vaccination.
  • If you are being re-vaccinated, the vaccine should be given in a setting with expertise and equipment to manage anaphylaxis. All public health clinics are equipped.
  • You should be observed for at least 30 minutes after re-vaccination. 
Please talk to your healthcare provider and discuss whether for you the benefits of the vaccine are greater than the possible risk of getting the vaccine. Your healthcare provider can help with a referral to an allergist, or you can call your local health unit and ask to speak to a public health nurse. This link will help you find your local health unit number.
 
 
 
Date last reviewed: 
Thursday, Nov 18, 2021