FOX NEWS: Canada: Pfizer, Moderna COVID-19 vaccine preferred 2nd dose after AstraZeneca

Canada: Pfizer, Moderna COVID-19 vaccine preferred 2nd dose after AstraZeneca



Canada's National Advisory Committee on Immunization said Thursday people who got the AstraZeneca vaccine as their first dose should get Pfizer-BioNTech or Moderna for their second shot.

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