Canada to recommend mixing and matching AstraZeneca, Pfizer and Moderna COVID-19 vaccines

Canada is changing its guidelines on mixing and matching second doses of COVID-19 vaccines and will advise Canadians to combine either the AstraZeneca-Oxford, Pfizer-BioNTech or Moderna shots interchangeably in certain situations.

The National Advisory Committee on Immunization (NACI) will update its guidance to provinces and territories in the coming days and recommend that a first shot of the AstraZeneca vaccine can be followed by Moderna or Pfizer, according to sources with direct knowledge of the decision who spoke to CBC on condition