Ontario Accelerates Second Doses of AstraZeneca COVID-19 Vaccine

Published on June 14, 2021

The Ontario government, in consultation with the Chief Medical Officer of Health and other health experts, is further accelerating the second dose interval for individuals who received their first dose of an AstraZeneca COVID-19 vaccine to eight weeks, with informed consent, from twelve weeks.  


With informed consent, individuals can choose between a second dose of AstraZeneca or an mRNA vaccine, at an 8 to 12-week interval. All of these options provide protection against COVID-19, including the Delta variant, and have been deemed safe.


Beginning Monday, June 14, 2021 at 8:00 a.m., individuals who received their first dose of the AstraZeneca vaccine will now be eligible to book their second dose appointment at an interval of eight weeks or more with informed consent.


Individuals who wish to receive an mRNA vaccine for their second dose can book an appointment through the provincial booking system, through public health units that use their own booking system, or a participating pharmacy.


Individuals who wish to receive a second dose of the AstraZeneca vaccine can contact the pharmacy or primary care provider where they received their first dose . 


Every dose administered means we are one step closer to the end of the pandemic. 


We encourage everyone to receive their second dose as soon as they are eligible and within the recommended interval to ensure maximum protection against COVID-19.


Learn more: https://news.ontario.ca/en/release/1000329/ontario-accelerates-second-doses-of-astrazeneca-covid-19-vaccine