Experts warn "stealth" Omicron fueling start of Canada's 6th wave

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Canadian health experts say the sixth COVID-19 wave is just getting started, as public health restrictions disappear, and the number of hospitalizations rises.

In Nova Scotia and New Brunswick, there's a rise in front-line workers becoming infected.

And wastewater data from Ontario and Alberta have detected an increased presence of the virus that causes COVID-19.

Jamie Mauracher reports on how the more contagious Omicron BA.2 subvariant, dubbed "stealth Omicron," is being blamed; and the questions being raised about needing a fourth vaccine dose.