Will Canadians need a COVID-19 booster shot?

Dr. Jeff Kwong from ICES (Institute for Clinical Evaluative Sciences) discusses the results of a study into COVID-19 vaccines that show they are highly effective in preventing or minimizing an infection nearly eight months after being administered. Dr. Kwong says the need for a booster shot depends on the ongoing effectiveness of vaccines and how far provinces want to go in reducing the number of cases.