To many doctors across Canada, the latest statement from the National Advisory Committee on Immunization (NACI) left a lot to be desired. NACI's guidance on mRNA vaccines (Pfizer, Moderna) being "preferred" over viral vector vaccines like AstraZeneca and Johnson & Johnson seemingly contradicts the messaging from public health officials who say the best shot is the first one you can get. On "ThisMatters," we explain how the advisory panel's advice can fuel vaccine hesitancy and why Canada can't afford bad public health messaging. Guest: Sabina Vohra-Miller, founder of the web site "Unambiguous Science"

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