An infectious disease expert says "there's no doubt" that a sixth wave of COVID-19 sweeping across Ontario and it's being driven by the highly transmissible BA.2 subvariant at the same time restrictions have been lifted across the province.
"We've opened the doors to a new variant," Colin Furness, an expert in infectious disease epidemiology from the University of Toronto, told CTV National News. "Then eliminated all of our defenses."
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