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Who is currently eligible?

Anyone five years of age or older (must be five years of age or older on the day of vaccination) who lives, works or goes to school in Halton Region is eligible to be vaccinated for COVID-19.

COVID-19 vaccines continue to provide strong protection against getting seriously ill, having to go to hospital or dying from COVID-19.

Have questions about COVID-19 vaccines? Get information from reliable sources. Visit our Vaccines & Safety page or check out our page of Frequently Asked Questions about COVID-19 vaccination. For more information for children 5-11 years of age, visit halton.ca/COVIDvaccines4kids.

Eligibility for third doses of COVID-19 vaccine

The protection you get from the vaccines may decrease overtime. A third dose of a COVID-19 vaccine can restore strong protection against getting seriously ill, having to go to the hospital or dying from COVID-19. Eligibility for third doses in Ontario aligns with recommendations from the National Advisory Committee on immunization (NACI) (external link). Learn more about third doses (PDF file).

Vaccines being provided for third doses are mRNA vaccines (Pfizer or Moderna) and can be a different vaccine than what you received for your second dose. Find out which vaccine types are available at Halton Community COVID-19 Vaccination Clinics. Third doses are also available at pharmacies, provincial clinics, GO-Vaxx bus locations, and primary care offices. Use the Province’s pharmacy finder tool (external link) to quickly sort by location and vaccine type (Pfizer or Moderna).

To learn more about where to get a third dose, visit the COVID-19 Vaccination Clinic webpage.

Have questions about third doses? Please visit our Frequently Asked Questions page.

The following groups are currently eligible for third doses (eligibility will be assessed at clinics):

Individuals in this category will receive a three-dose primary series with the vaccine product authorized for their age group. We are following provincial guidance for dosage amounts for third doses (external PDF).

Eligibility requirements:

For a full list of eligible individuals in this group, visit the Province's Getting the COVID-19 vaccine website (external link).

Dose interval between second and third dose:

  • At least two months (56 days) after second dose, unless advised by primary health care provider.

How to get vaccinated:

Book an appointment at a Halton Region Community COVID-19 Vaccination clinic.

Eligible individuals must present with one of the following to receive a third dose at a vaccination clinic:

  1. A completed referral form (PDF file) from their health care practitioner (or physician note with equivalent information to the referral form); or
  2. A current medication bottle, prescription, or receipt for a medication listed in COVID-19 Vaccine Third Dose Recommendations (external PDF), Table 1: List of Immunosuppressant Medications for Third Doses.
    • The prescription or medication bottle must include:
      • The client’s first and last name (must match piece of identification).
      • The address and telephone number of the pharmacy that filled the prescription.
    • The prescription must have been prescribed or refilled within the past 6 months.
    • Active treatment with B-cell depleting therapies (monoclonal antibodies targeting CD19, CD20 and CD22) must have been completed within the last 12 months.

Eligibility requirements:

Residents of the following congregate settings are eligible for a third dose:

  • Long-Term Care Homes
  • Retirement Homes
  • Elder Care Lodges
  • Elderly living in other congregate settings

View a list of all eligible congregate care settings in Halton region (PDF file).

Dose interval:

  • At least three months (84 days) after the second dose

How to get vaccinated:

Halton Public Health will contact eligible facilities to arrange for vaccination of their residents. For more information, residents of congregate settings can speak with their Director of Care or Administrator. Mobile clinics may offer Pfizer or Moderna vaccine, depending on supply.

Eligible residents can also book an appointment at a Halton Region Community COVID-19 Vaccination clinic. Residents will need to provide proof of living in an eligible congregate settings. This can include a driver’s license or a letter (on letterhead) from the congregate facility.

Eligibility requirements:

  • All individuals must be 18 years of age or older on the day of vaccination

Dose interval:

  • At least three months (84 days) after second dose

Find out where to get vaccinated.

Eligibility requirements:

  • All First Nations, Inuit and Métis adults
  • Non-indigenous adult household members of indigenous persons
  • Indigenous persons and their household members must be 16 years of age or older on the day of vaccination.

Dose interval:

  • At least three months (84 days) after second dose

Find out where to get vaccinated.

Eligibility requirements:

  • Any regulated health professional (external link) and any staff member, contract worker, student/trainee, registered volunteer, or other designated essential care giver currently working in-person including workers not providing direct patient care and are frequently in the patient environment (ie., cleaning staff, research staff, other administrative staff)
  • Workers providing direct patient service in congregate, residential or community setting outside of a health care organization
  • Designated essential caregivers in congregate settings (including long-term care home and retirement home staff and designated caregivers.
  • For a full list of eligible individuals in this group, read the Ministry of Health’s COVID-19 Vaccine Third Dose Recommendations (external link). See Appendix B of the guidance document for specific examples of health care workers.
  • Eligible healthcare workers must be 16 years or older on the day of vaccination.

Dose interval:

  • At least three months (84 days) after second dose

How to get vaccinated:

Ontario hospitals, including Joseph Brant Hospital and Halton Healthcare, will be responsible for vaccinating hospital staff and will contact staff directly with more information. Appointments for hospital staff cannot be booked through our online booking system.

Find out where to get vaccinated if you are a health care worker and do not work in a hospital.

Learn more about other vaccination options, including pharmacies and primary care.

Eligibility requirements:

  • Individuals who received two doses of AstraZeneca/COVISHIELD COVID-19 vaccine
  • Individuals who received one does of Jansen/Johnson & Johnson COVID-19 vaccine

Dose interval:

  • At least three months (84 days) after second dose

Vaccine type:

  • mRNA vaccine
  • A viral vector third dose may be considered if an mRNA vaccine is contraindicated. Speak with your healthcare provider for more information.

How to get vaccinated:

Book an appointment at a Halton Region Community COVID-19 Vaccination clinic.

Learn more about other vaccination options, including pharmacies and primary care.

Third Dose Calculator

Select groups are eligible to get a third dose of COVID-19 vaccine. Use this tool to help calculate the earliest date that you can get your third dose.



Error: Please ensure both fields have been filled in:

placeholderText: Based on the information you provided, this is the earliest date you are eligible for a 3rd dose.

Find out where you can get your third dose.

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Eligibility for fourth doses of COVID-19 vaccine

The Province now recommends a fourth dose of COVID-19 for:

Eligibility requirements:

For a full list of eligible individuals in this group, visit the Province's Getting the COVID-19 vaccine website (external link).

Dose interval:

  • At least three months (84 days) after third dose.

How to get vaccinated:

Find out where to get vaccinated.

Individuals 18 years and older who were eligible for a three-dose primary series are eligible to book for a fourth dose at a Halton community COVID-19 vaccination clinics (external link)

Eligible individuals 16 and 17 years of age, who are both moderately to severely immunocompromised AND either a healthcare worker or First Nations, Metis or Inuit and their household members please attend a walk-in clinic to receive a fourth dose (find clinic locations and hours here).

What you will need to bring with you to your fourth dose appointment

Eligible individuals must present with one of the following to receive a fourth dose/booster at a vaccination clinic:

  1. A completed referral form (PDF file) from their health care practitioner (or physician note with equivalent information to the referral form). This can be the same referral form used to get your third dose; or
  2. A current medication bottle, prescription, or receipt for a medication listed in COVID-19 Vaccine Third Dose Recommendations (external PDF), Table 1: List of Immunosuppressant Medications for Third Doses.
    • The prescription or medication bottle must include:
      • The client’s first and last name (must match piece of identification).
      • The address and telephone number of the pharmacy that filled the prescription.
    • The prescription must have been prescribed or refilled within the past 6 months.
    • Active treatment with B-cell depleting therapies (monoclonal antibodies targeting CD19, CD20 and CD22) must have been completed within the last 12 months.

Find out which vaccine types are available at Halton Community COVID-19 Vaccination Clinics. We are following provincial guidance for dosage amounts for fourth doses (external PDF).

Based on recommendations from the Ontario Immunization Advisory Committee, the Province now recommends (external link) fourth doses of COVID-19 vaccine for residents of:
  • Long-term Care
  • Retirement Homes
  • Elder Care Lodges, and
  • Senior Congregate Living Settings.

Dose interval:

  • At least three months (84 days) after the third dose

How to get vaccinated:

  • Halton Region Public Health is currently planning our vaccination strategy to vaccinate these residents as quickly and efficiently as possible. Residents will be vaccinated at their congregate care facility. Please check with the director of care for more information.
  • At this time, residents will not be able to book a fourth dose appointment at a Halton Community COVID-19 vaccination clinic.

Individuals who received one or two non-Health Canada approved COVID-19 vaccines

Individuals who have proof of vaccination and have received a complete one or two-dose series of a COVID-19 vaccine that is not authorized for use by Health Canada will be offered one additional dose of an mRNA vaccine. The additional mRNA dose can be received at a minimum of 28 days after the previous dose.

Report your out-of-province COVID-19 vaccines here. This should be completed before you receive additional doses.

  • The COVID-19 vaccination records you submit must be in English or French, or you must have a certified translation into English or French.
  • If your document is handwritten, we may request additional proof of vaccination. To avoid further delay, please contact the clinic or health authority who provided your vaccination and request additional proof of vaccination, if available (for example, a SMART Health Card QR code, an electronic document from the clinic, or an enhanced certificate from the region where your record is from).
  • If you are visiting Ontario and need a QR code: please note the Verify Ontario App (external link) used by businesses and organizations to scan a visitor’s QR code, can scan "SMART Health Card" QR codes issued outside of Ontario. For a full list of jurisdictions that the Verify Ontario App can scan, please visit the Verify Ontario list (external link). If your jurisdiction is on the list, contact the clinic or health authority who provided your vaccination and request the SMART Health Card QR code. There is no need to submit your vaccination records to Halton Region.

Update: There has been an increase in requests for vaccinations received outside of Ontario to be entered into the provincial COVID-19 vaccination portal (external link). It may take 4-6 weeks for vaccination records to be updated. We are prioritizing those who need additional doses of vaccine to be fully vaccinated, and older Halton residents who were fully vaccinated outside of Ontario and need a booster dose. We are working as quickly as possible and appreciate your patience.

If you received two doses of a COVID-19 vaccine not approved by Health Canada AND you received an additional dose of an approved Health Canada COVID-19 mRNA vaccine, you are not eligible for additional doses at this time. This guidance is subject to change.

If you received three doses of a non-Health Canada authorized COVID-19 vaccine at the appropriate interval, you are not eligible for additional doses at this time. This guidance is subject to change.

To learn about where to get your vaccine, refer to the COVID-19 Vaccination Clinic webpage.

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