COVID-19 Vaccines: Dose Information

Stay up to date on all COVID-19 vaccine doses

Keeping up-to-date with COVID-19 vaccines continues to be one of the most effective ways to protect yourself against serious illness, hospitalization, and death from COVID-19, as vaccine protection can decrease over time.

What does staying up to date mean?

  • 6 months – 4 years: Completed a primary vaccine series.
  • 5 years and older:
    • Not at higher risk: Completed a primary series and received a booster dose (monovalent or bivalent) on or after September 1, 2022.
    • Specific high-risk populations: Completed a primary series and received a booster dose within the last 6 months

This helps to protect you, your family, and your community from COVID-19.

Where to get vaccinated? See the COVID-19 Vaccine Appointments/Walk-ins page for the City of Thunder Bay OR the District COVID-19 Vaccination Clinics page for district communities.


Spring 2023 Booster Campaign

The following groups are recommended to receive a COVID-19 booster this spring if at least 6 months (168 days) has passed since their last dose or confirmed COVID-19 infection.

  • Individuals aged 65 years and older;
  • Residents of long-term care homes, retirement homes, Elder Care Lodges, and other congregate living settings for seniors;
  • Individuals aged 18 years and older living in a congregate care setting for people with complex medical care needs;
  • Pregnant individuals;
  • Individuals aged 18 years and older who are moderately to severely immunocompromised; and
  • Individuals aged 55 years and older who identify as First Nations, Inuit, or Métis and their non-Indigenous household members aged 55 years and older

Individuals aged 5 years or older who have not received a booster dose since September 1, 2022 should also get a booster dose this spring.

For more information on where to get a COVID-19 booster, see for Thunder Bay-area clinics and for opportunities in District communities.

Bivalent Boosters

Bivalent booster doses are available to everyone 5 years of age and older.

Read on to learn more:


Dose Eligibility

    Last Updated: 06/04/2023