Skip to main content

If you still need a first dose of COVID-19 vaccine, or you’re waiting for a second dose, here’s some information to keep in mind.

Astra-Zeneca

You may have heard that Ontario stopped offering the Astra-Zeneca vaccine due to the risk of rare but dangerous blood clotting. However, data from around the world indicates that the blood clotting risk from a second dose of Astra-Zeneca is much lower.

So, if you have already had one dose of Astra-Zeneca, you have two options:

  1. You may choose to receive Astra-Zeneca for your second dose in order to be fully vaccinated. The recommended timing is at or after 12 weeks since your first dose. You can contact the pharmacy where you received your first dose to make an appointment to receive your second dose.
  2. You may wait until more safety information is available on safety of received an mRNA vaccine (such as Pfizer or Moderna) as a second dose. A clinical trial is now underway to test the safety and effectiveness of mixing the vaccines, and results are expected in June. Early results from Spain indicate that a dose of Astra-Zeneca, followed by a dose of Pfizer, provides good immunity with only mild to moderate side effects and no hospitalizations. If the National Committee on Immunization (NACI) reviews the evidence and concludes this strategy is safe and effective, then individuals who received Astra-Zeneca as a first dose will be eligible for a second dose of another vaccine.

Other information

As of May 26, 55% of Ontario’s population had received one dose of vaccine, with numbers rising quickly. Vaccination clinics are opening up around the province to vaccinate teens and families, as individuals 12 and over are now eligible for vaccination. In additional to the provincial vaccine clinics, other clinics are often “pop ups”, which means they set up for a few days or weeks.

Here are a few resources to help you register for a first dose.

Wondering about 2nd dose?

As of May 10, Ontario healthcare workers are eligible to receive their 2nd dose at a shorter interval than the general public. If you have not yet received your second vaccine dose, contact the location you had your first dose and let them know that you are a frontline healthcare worker. (For those vaccinated at Humber River Hospital, visit their website for more information). You will need to bring proof of your healthcare worker status when you arrive for your second dose.