Region of Durham

Select your priority group to start your appointment booking:

Booster dose appointment


Interval criteria: The recommended interval to receive a booster dose is 6 months (168 days) after the last dose or confirmed COVID-19 infection.

Dose interval calculator: Use our date calculator tool to check when you are eligible for your next COVID-19 vaccine dose.

I am eligible 168 days after my last dose.

Date check: 168 days from the date you entered is (YYYY-MM-DD). Please ensure you book your next COVID-19 vaccine appointment on or after this date.


  • Effective July 7, 2023, the Ontario Ministry of Health is recommending that individuals five years of age and older should consider delaying receipt of a COVID-19 booster dose until fall 2023.
  • Receiving a booster dose in the fall, as respiratory season commences, will maximize protection against COVID-19 when peak circulation of the virus is expected.
  • The decision to receive a booster dose prior to fall 2023 may be appropriate for certain individuals based on their unique health status and are encouraged to speak with their health care provider.

Primary series appointment

Vaccine product:
  • The Pfizer COVID-19 vaccine for infants and children 6 months to under 5 years is a three-dose primary series.
  • The Moderna COVID-19 vaccine for infants and children 6 months to under 5 years is a two-dose primary series.

Interval criteria: The recommended interval between primary series doses for this age group is 8 weeks (56 days) after the last dose and/or after symptom onset or positive test (if asymptomatic).

Primary series appointment


Primary series interval criteria: The recommended interval between the first and second dose is 8 weeks (56 days) after the last dose and/or after symptom onset or positive test (if asymptomatic).


Interval criteria: The recommended interval between primary series doses is 8 weeks (56 days) or 28 days with informed consent, after the last dose and/or after symptom onset or positive test (if asymptomatic).

Dose interval calculator for primary series

Use our date calculator tool to check when you are eligible for your next COVID-19 vaccine dose.

I am eligible 56 days after my last dose.

Date check: 56 days from the date you entered is (YYYY-MM-DD). Please ensure you book your next COVID-19 vaccine appointment on or after this date.

Carefully review the following question:

  1. Have you ever had a serious reaction following immunization that has not been investigated by your local health unit?

    Please contact the Durham Health Connection Line at 1-800-841-2729 or 905-668-2020 prior to booking a vaccination appointment. We need to follow-up to ensure it is safe for you to receive the vaccine at our clinics.