Recommendations on the use of Pfizer-BioNTech Comirnaty (3 mcg) COVID-19 vaccine in children 6 months to 4 years of ageRecommendations as of October 21, 2022. Post author By Government of Canada Post date 5 December 2022 ← COVID-19: Provincial Testing Guidance → Recommendations on the use of Moderna Spikevax BA.4/5 bivalent mRNA (50 mcg) COVID-19 booster vaccine in adults