Guest: Ashleigh Tuite, infectious disease epidemiologist, mathematic modeller and assistant professor at the University of Toronto

Ontario's third wave is being fuelled by variants of concern (VOC), which make up more than 70 per cent of the cases in the province right now.The B.1.1.7 variant is the most common one in Ontario, but the other variants are here as well. Tuite joins us to discuss how these variants are being tracked, how a variant of interest can graduate to becoming a variant of concern and whether these are here to stay for the long haul.

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