Theresa Tam says it is possible that there could be a resurgence of cases in the fall, especially during flu season.
She said she is encouraging hospitals and other health-care facilities to implement emergency plans in case of a fall spike, potentially even greater than the first wave of cases in Canada.
Montreal public health officials announced Friday that 33 more people have tested positive since its last update Thursday.
Tam reported there had been several classes realized from the spring, when the authorities was unwell-organized and with no enough protective gear for overall health-treatment employees, and feared a enormous surge of COVID-19 would overwhelm the overall health-care technique.
"What we know based on what we learned from other countries and cities that had a devastating impact in that initial wave, if you exceeded that capacity the mortality goes up really, really high", she said.
"On the whole, I think we are on that "slow burn" trajectory but it doesn't take much for cases to escalate", Tam said.
In March, Canadians watched in horror as northern Italy's COVID-19 outbreak overran its health-care system, leaving doctors to choose which patients got a ventilator and which were left without one. Several provinces have observed this upward trend over the summer months as we have reopened more social and economic spaces, including some jurisdictions with previously very low transmission rates.
It also shows "peaks and valleys" of outbreaks are expected to continue in Canada until January 2022.
The data released Friday suggests the number of cases by August 23 could be as high as 127,740 and the number of deaths could reach as high as 9,115.
"That's why you want to keep it below that capacity threshold in terms of activity".
The pilot launch of the COVID Alert app in Ontario has seen two million people, out of a provincial population of 14 million, download the app to date.
As of Friday, Canada has recorded 121,392 cases of COVID-19, including 9,018 deaths.