Second Doses of AstraZeneca-Oxford Vaccine Available 

Anyone that received a first dose of the AstraZeneca-Oxford COVID-19 vaccine will be able to receive a second dose of either the Pfizer-BioNTech or Moderna vaccine, says the Manitoba Government.

The minimum time that must pass before people who got AstraZeneca can get a second dose is 28 days. For those that aren’t in a higher risk category, eight weeks is recommended.

Announced on Monday, anyone who received the first dose of any COVID-19 vaccine on or before April 8 can book a second-dose appointment. Those who got their first shot on or before April 13 will be able to book a second-dose appointment on Tuesday at 11:45 a.m.

The announcement that different vaccines could be mixed, was waiting for the results of a U.K. study.

Dr. Joss Reimer, the medical lead for Manitoba’s vaccine implementation task force, says a Spanish study shows that people who received a second dose of an mRNA vaccine [such as Moderna or Pfizer-BioNTech] after AstraZeneca had a good immune response.

All Indigenous people in Manitoba and those with specific health conditions are also eligible to book a second dose if they meet the minimum time interval between doses.

Manitoba is the second province in Canada to recommend an mRNA vaccine for the second dose.