Officials said the province continues to work through a backlog of tests and 5,650 cases remain under investigation, down from just over 7,200 on Sunday.
The province now says 18 cases in total have been linked to the event, and all of them are self-isolating at home.
"Another death in Haliburton, we're not sure if it's related to the outbreak or not, two additional deaths in Lambton, who are in their 70s or 80s, one in Haldimand-Norfolk, and one in Huron-Perth in their 60s", Ontario's Associate Medical Officer of Health Dr. Barbara Yaffe said during a news conference at Queen's Park.
In the city of Thunder Bay there are three confirmed cases.
Ontario reported 351 new COVID-19 cases and 10 new deaths Monday, as Premier Doug Ford warned the province could soon face a shortage of critical medical supplies.
She says cases are continuing to increase among people who have been exposed in the last two weeks, and physical distancing remains critically important.
Speaking in his regular COVID-19 address to the nation and media Monday, Prime Minister Justin Trudeau offered more details on the emergency wage subsidy that was first announced last week.
Guilbault says only essential travel will be allowed in those regions and says Quebec provincial police have also set up checkpoints near the Canada-U.S. border to intercept snowbirds coming back to Quebec to ensure they understand there's a 14-day quarantine.
The government is changing how cases are being reported in order to give a more relevant daily summary from Public Health Ontario.
The number of resolved cases had been stuck at eight for many days, but health officials had said to expect a large jump once the data caught up to a new definition for resolved.
Canada's Chief Public Health Officer says if you are not sick, you shouldn't have a mask on.
There are now 1,706 confirmed cases of COVID-19 in Ontario, including 23 deaths.
Doctor Williams is asking that individuals look at how they can support others by taking necessary actions.
It brings the province's total number of cases to 25 confirmed - including one death -and 47 presumptive cases.