Ontario Proceeding with Second Dose Administration of AstraZeneca

The Ontario government, in consultation with the Chief Medical Officer of Health and other public health experts is authorizing second dose of 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.

For more details, see here.