COVID-19 Vaccine Recommendations (primary series and booster doses)

COVID-19 Vaccine Recommendations and Eligibility

Updated: September 26, 2022

Protection after a primary COVID-19 vaccine series decreases over time, especially against the Omicron variant of concern. We recommend staying up to date with your COVID-19 vaccines. (“Up to date” means a person has completed their primary series and has received a COVID-19 vaccine within the last 6 months.) See the below chart for more information.

Bivalent booster

As of September 16, anyone age 18+ is eligible to receive the bivalent booster at the recommended interval of at least six months (minimum 3 months) from your last dose. You can book an appointment online or call 1-800-265-7293 ext. 7006. Please check the system regularly as new appointments are being added. You can also contact your healthcare provider or visit a participating pharmacy in your area.

You can use this online tool to calculate days since you last dose to determine if you meet the minimum interval.

COVID-19 immunization series for individuals 6 months or older
Age/Eligibility Recommended and Minimum Intervals
6 months to 4 years

Primary series:

  • Pfizer:
    • 2nd dose, 2 months (56 days) after 1st dose (minimum 21 days)
    • 3rd dose, 2 months (56 days) after 2nd dose (minimum 56 days)
  • Moderna
    • 2nd dose, 2 months (56 days) after 1st dose (minimum 28 days)

Booster doses: not eligible

5 years and older

Primary series:

  • 2nd dose, 2 months (56 days) after 1st dose (minimum 28 days)

Booster doses:

  • 6 months (168 days) after last dose (minimum 3 months or 84 days)
Immunocompromised individuals ages 6 months to 4 years

Primary series:

  • Pfizer:
    • 2nd dose, 2 months (56 days) after 1st dose (minimum 21 days)
    • 3rd dose, 2 months (56 days) after 2nd dose (minimum 56 days)
  • Moderna
    • 2nd dose, 2 months (56 days) after 1st dose (minimum 28 days)
    • 3rd dose, 2 months (56 days) after 2nd dose (minimum 28 days)

Booster doses: not eligible

Immunocompromised individuals ages 5 years and older
 

Primary series:

  • 2nd dose, 2 months (56 days) after 1st dose (minimum 28 days)
  • 3rd dose, 2 months (56 days) after 2nd dose (minimum 28 days)

Booster doses:

  • 6 months (168 days) after last dose (minimum 3 months or 84 days)

People Who Have Had COVID-19

People who have had COVID-19 infection should receive the recommended number of doses as outlined above. However, they are recommended to wait 4 to 8 weeks after having COVID-19 to get the next dose in their primary series. People who get COVID-19 after a complete primary series are recommended to wait 3 months after having COVID-19 to get their booster dose. Optimal timing can be discussed with a health care provider and depends on age, number of doses received, risk of exposure and health status.

Questions?

If you have questions or need assistance about your individual situation in relation to recommended doses, please call our Client and Community Support Call Centre.