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COVID vaccination: is one dose better than nothing?

 

Part 2

The government of Canada has opted to prolong the second COVID-19 vaccination to 16 weeks after the first dose due to a limited vaccine supply. The decision was based on a recommendation from the National Advisory Committee on Immunization (NACI; www.canada.ca/en/public-health/services/immunization/national-advisory-committee-on-immunization-naci/recommendations-use-covid-19-vaccines.html#b1). The rationale is that administering one dose to a wider population will have a greater impact on severe COVID outcomes than giving the required two doses to fewer people. This raises the question: what are the benefits and risks of this partial-immunity approach? Read More