There was, however, still no transmission data for almost two thirds of the province's 588 known cases as of Tuesday as public officials continued the painstaking work of contact tracing in order to confirm or rule out community transmission.
The province's confirmed number of COVID-19 cases rose to 588 Tuesday, a one-day increase of 85 cases, which is the largest since the pandemic began impacting Ontarians.
At least five of the new cases are hospitalized, including a woman in her 20s in Peel.
Another 10,074 individuals are now under investigation for potential infection out of the more than 30,000 who have been tested for the novel coronavirus in Ontario to date. There are now 22 cases in Brampton, four in Caledon and 36 in Mississauga. Kingston Frontenac Lennox Addington confirmed two of the patients are under 18, a male and female, who had been in close contact with a positive case and are in self-isolation. Numerous ill individuals are in isolation, and five of all the cases confirmed have been hospitalized. An 80-year-old woman who lived in a facility in Hamilton died in hospital, where she had been treated for the past week.
As recently as March 13 - just days before the federal government would jettison its WHO mindset and limit non-essential travel to the United States and ban all other foreign travellers, including migrants - federal Health Minister Patty Hajdu told reporters that strict border controls don't work: "Border measures are highly ineffective and, in some cases, can create harm".
Thirty-one cases listed did not have any information for ages, location, form of transmission or status.
Other contracted the virus from recent travel to Spain, France, Dominican, US, Philippines, Mexico, Bahamas, Peru, UK, and Egypt.
Hundreds of Canadians became trapped on a California cruise ship this month after a COVID-19 outbreak.
There is evidence of community spread in all three regions.
To ensure as little inter-personal contact as possible, provinces and local governments have taken increasingly urgent steps to force people to stay home.