Ontario Proceeding with Second Dose Administration of AstraZenecaPublished on May 21, 2021
The Government of Ontario, in consultation with the Chief Medical Officer of Health and other public health experts, is proceeding with second doses of the AstraZeneca vaccine.
For a limited time during the week of May 24, individuals who received their first dose of AstraZeneca during the period of March 10, 2021 to March 19, 2021 may opt for an earlier dose interval of 10 weeks with informed consent. Choosing to receive the second dose of AstraZeneca at the 10-week interval is safe and provides strong protection against COVID-19.
This opportunity is being made available to ensure every vaccine dose possible is used to protect Ontarians during the effective delivery period.
Eligible individuals are encouraged to contact the pharmacy or primary care provider where they received their first dose and can book an appointment beginning the week of May 24. Primary care settings and pharmacies may also be reaching out to eligible Ontarians.
We know everyone is eager to receive their second dose. More information on how individuals who received their first dose of AstraZeneca after March 19th can book a second dose appointment in the near future.
The province will also provide further guidance with respect to administering doses of two different vaccines in the near future and in advance of the 12-week interval when most people are needing to receive their second dose of the AstraZeneca vaccine.
When the time comes to receive a second dose, everyone who received a first dose of the AstraZeneca vaccine will receive either an AstraZeneca or mRNA vaccine for their second dose.
As more Ontarians receive a first dose of the COVID-19 vaccine, with over 7.7 million doses administered to date, providing the second dose of the vaccine will offer the best protection possible against COVID-19 and variants, and support provincial vaccination targets as part of Ontario’s Roadmap to Reopen.