This is the highest single-day jump that Ontario has seen so far in new cases.
Six people have died in the province and eight cases have resolved.
“Unfortunately, this man’s tragic passing highlights that we now have community transmission of COVID-19 in our area,” said Dr. Lynn Noseworthy, the health unit’s medical officer.
Monday’s list includes cases from Toronto, York Region, Peel Region, Halton Region, Durham Region, Hamilton, Sudbury, Ottawa, Simcoe Muskoka, Wellington Dufferin Guelph, Haliburton Kawartha Pineridge, Waterloo, Kingston, Frontenac, Lennox and Addington and Eastern Ontario health units.
Six patients are listed as needing hospitalization.
Some of the hospitalizations include men and women in their 30s, 40s, 50s and 70s.
The province has tested more than 28,000 people for the virus so far, and more than 8,000 people are under investigation.