If you’re moderately to severely immunocompromised due to disease or treatment,

If you’re moderately to severely immunocompromised due to disease or treatment, you may have a lower immune response to COVID-19 vaccination. NACI recommends you get an additional mRNA vaccine dose following your 1- or 2-dose vaccine series. The additional dose should be given at least 28 days after the second dose. A booster dose may be recommended at least 6 months after the third dose. For more information on COVID-19 vaccines and dosage, consult a health care provider about what’s best for you.

Please visit https://www.canada.ca/en/public-health/services/diseases/coronavirus-disease-covid-19/vaccines/how-vaccinated.html for more details.