Almost half of Canada’s confirmed cases of COVID-19 are now due to community spread, according to the Public Health Agency of Canada.

Officials say that while risk varies between and within communities, the overall risk to Canadians is considered high.

“There is already a significant impact on our health care system,” reads Canada’s coronavirus update page. “If we do not flatten the epidemic curve now, the increase of COVID-19 cases could impact health care resources available to Canadians.”

An epidemiological summary from the health authority shows that 48% of Canada’s probable exposure setting is from the community.

Of the remainder of cases, 42% come from travellers, 7% come from close contact with a traveller, and 4% have yet to be determined.

Dr. Eileen de Villa, Toronto’s Chief Medical Officer, further supported these numbers, telling reporters on Monday that “community transmission is occurring” in the city at increasing rates.

“We all have a responsibility to protect ourselves and our families from this spread,” de Villa said.

On Monday, Toronto declared its first-ever state of emergency, joining cities like Vancouver and Calgary.

Prime Minister Justin Trudeau also continues to push for physical distancing and plead to Canadians to stay home.

“Enough is enough,” said Trudeau. “Go home and stay home… We can’t afford to stop now.”