Ontario Administers 9 Million Vaccine Doses

Published on May 31, 2021

Getting your second dose

When you can get it

A stable and reliable supply of COVID-19covid 19 vaccines has allowed the province to quickly expand eligibility and access to Ontarians to receive the vaccine ahead of schedule, providing a strong level of protection against the virus.

Ontario is now accelerating second doses for all Ontarians.

While the interval between first and second doses can be up to 16 weeks, the new dose interval could be as short as 28 days, where local appointments and supply are available.

Timing of second dose appointments may vary based on local considerations, vaccine supply and the date of your first dose appointment.

<h4="dose-2-schedule">Anticipated schedule

Second dose appointments will be based on the timing of your first dose, on a “first-in, first-out” basis.

If your first dose was Pfizer or Moderna

Accelerated second doses will be available according to the following schedule.

Starting week Who is eligible
May 31 People aged 80 and over
June 14 People aged 70 and over
June 28 People who received their first dose between the week of March 8 and April 18
July 19 People who received their first dose between the week of April 19 and May 9
August 2 People who received their first dose between the week of May 10 and May 30
August 9 and 16 People aged 12 to 25
August 9 People who received their first dose from the week of May 31 onwards (respecting the recommended intervals)
If your first dose was AstraZeneca

If you received your first dose from March 10 to 19, you may choose to receive a second dose of AstraZeneca during the week of May 24 (at an earlier interval of 10 weeks), with informed consent.

If you received your first dose of AstraZeneca on March 10 or later, you will be eligible to receive a second dose of the AstraZeneca vaccine from May 31 onwards, at a 12-week interval.

If you are eligible, contact the pharmacy or primary care setting where you received your first dose to book an appointment or search for another pharmacy offering AstraZeneca.

Shortened second dose intervals for high-risk health care workers, individuals with certain health conditions and First Nations, Inuit and Metis individuals

Certain groups who face a greater risk of contracting and suffering serious illness from COVID-19covid 19 can also get their second dose at a shorter interval for additional protection.

You may be able to get your second dose earlier than four months after your first one if you:

  • live in a:
    • long-term care home
    • retirement home
    • Elder Care Lodge
    • assisted living facilities
  • had an organ or stem cell transplant
  • are being treated for cancer that affects your blood, bone marrow or lymph nodes (a haematological malignancy) or a malignant solid tumor
  • are a dialysis patient
  • are a high-risk health care worker
  • identify as First Nations, Inuit or Métis

Where to get it and how to book an appointment

When you are eligible for an accelerated second dose, you may choose to return to the same place you got your first dose or book an appointment at a different site or channel (even if you already have a second appointment booked).

Not all clinic types are available in every region and depend on local planning done by each public health unit.

Please do not try to book an appointment before you are eligible.

Mass immunization clinic

In most cases, if you booked your first dose at a mass immunization clinic, your second dose was automatically scheduled 16 weeks after your first.

You can rebook your appointment:

Second doses can also be booked without a first appointment through the provincial booking system.

Pop-up or mobile clinic

If you already have an appointment booked at the pop-up location where you received your first dose, you will also have the option of booking a second dose at another mobile clinic or through another channel.

More information will follow on how and when second dose booking and rebooking will be available.

Hospital clinic

Visit your local hospital or public health unit website for booking details, if available in your region.

Pharmacy or primary care provider

You are encouraged to contact the pharmacy or primary care provider where you received your first dose. You may also find a different participating pharmacy to book an appointment, when you are eligible.

Primary care settings and pharmacies may also be reaching out to eligible Ontarians to accelerate appointments for second doses.


Hot spot communities

COVID-19covid 19 has disproportionately impacted certain neighbourhoods and communities across the province. These areas may have historical and ongoing high rates of COVID-19covid 19 deaths, hospitalizations and transmission.

To target these areas, the following postal codes are:

  • designated as hot spots
  • receiving additional doses of vaccines

Hot spot postal codes

Public health unit Postal codes starting with
Durham Region Health Department L1S, L1T, L1V, L1X, L1Z
Halton Region Public Health L9E
City of Hamilton Public Health Services L8W, L9C
Niagara Region Public Health L2G
Ottawa Public Health K1T, K1V, K2V
Peel Public Health L4T, L4W, L4X, L4Z, L5A, L5B, L5C, L5K, L5L, L5M, L5N, L5R, L5V, L5W, L6P, L6R, L6S, L6T, L6V, L6W, L6X, L6Y, L6Z, L7A, L7C
Simcoe-Muskoka District Health Unit L3Z
Region of Waterloo Public Health and Emergency Services N2C
Wellington-Dufferin Guelph Public Health N1K
Windsor-Essex County Health Unit N8H, N8X, N8Y, N9A, N9B, N9C, N9Y
York Region Public Health L0J, L3S, L3T, L4B, L4E, L4H, L4J, L4K, L4L, L6A, L6B, L6C, L6E
Toronto Public Health M1B, M1C, M1E, M1G, M1H, M1J, M1K, M1L, M1M, M1P, M1R, M1S, M1T, M1V, M1W, M1X, M2J, M2M, M2R, M3A, M3C, M3H, M3J, M3K, M3L, M3M, M3N, M4A, M4H, M4X, M5A, M5B, M5N, M5V, M6A, M6B, M6E, M6H, M6K, M6L, M6M, M6N, M8V, M9A, M9B, M9C, M9L, M9M, M9N, M9P, M9R, M9V, M9W
Southwestern Public Health N5H

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