As BA.4 and BA.5 take hold, experts say a summer wave of COVID-19 is underway

As summer festivals get underway across Canada, so too has another wave of COVID-19, experts warn.

"There is a potential for things to get substantially worse if we're not a little bit careful and don't take some basic steps to try to mitigate the spread of these variants," Dr. Christopher Labos, a Montreal-based epidemiologist and cardiologist, told CTV News.