COVID-19 vaccine supply.Ontarians who received either a Pfizer or Moderna first dose on or before April 18 can also book their second appointment ahead of schedule.
Ontario AstraZeneca recipients can book Pfizer or Moderna 2nd COVID shots The province said it is set to receive almost 4.7 million doses of Pfizer in June and 3.54 million in July, along with having received 193,000 doses of Modern so far this month.Therefore, as of 8 a.m.