Across Canada, everyone 5+ is eligible for a two-dose series of COVID-19 vaccine. For people 5+ who are moderately to severely immunocompromised, a three-dose series of vaccines is available in all provinces and territories. In Ontario and British Columbia, children who acquired HIV at our around birth are generally considered to be immunocompromised — the other provinces do not provide details about how they categorize this group of people.
Across Canada, except the Northwest Territories, everyone 12+ is eligible for a first booster dose. In the Northwest Territories, a booster is only available for immunocompromised people 5 years of age or older. The interval between the last dose of the primary vaccine series and the booster dose is generally the same for youth and adolescents as it is for adults, but may be slightly longer. In Ontario, it is recommended that people 12+ wait 6 months, but they can get their booster after 3 months with informed consent. In Nunavut, people aged 12–17 can get their booster 6 months after their primary series (4.5 months for 18+).
Generally, people who are 12 years of age or older are not eligible for a second booster dose at this time. In PEI, people 12–18 are eligible for a second booster but it is recommended only for those who are immunocompromised. In British Columbia, the Northwest Territories, Quebec, and the Yukon, second boosters are only available for immunocompromised people — in all other provinces and territories, people 12–18 are not eligible for a second booster, regardless of immune status.
A two-dose vaccine series for children and infants aged 6 months to 5 years is available in the Northwest Territories, Ontario, PEI, Quebec, Yukon, and Saskatchewan. In B.C., children and infants are not yet eligible but can pre-register for appointments. In Manitoba, First Nations, Métis and Inuit children and those who are immunocompromised or who have specific medical conditions are eligible. In Nunavut, people 4 and older are eligible, or 6 months to 4 years for those who are immunocompromised. In Manitoba and Saskatchewan, immunocompromised children as young as 6 months are eligible for a three-dose series.