Dr. Samir Gupta explains how the four COVID-19 vaccines now approved in Canada (Pfizer, Moderna, AstraZeneca, Janssen) work and why efficacy rates aren’t the most important number to look at.
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Dr. Samir Gupta explains how the four COVID-19 vaccines now approved in Canada (Pfizer, Moderna, AstraZeneca, Janssen) work and why efficacy rates aren’t the most important number to look at.