Ontario reported 491 new cases of COVID-19 on Sunday, up from 435 the previous day. There were 137 new cases in Toronto, 131 in Peel, 58 in Ottawa and 58 York Region.
Sunday’s tally is the largest since early May.
The province said 63 per cent of the new cases are in people under the age of 40.
There were 42,500 tests completed.
Ontario has reported 49,831 cases of the virus, of which 42,796 are listed as resolved.
The death toll from COVID-19 in Ontario is 2,839.
The province reported 112 people hospitalized with the virus. There are 28 patients in intensive care units and 16 of them are on ventilators.