Ontario reported another 689 cases of COVID-19 on Saturday, the most on a single day since early June.
One additional person has died.
The number of patients being treated for COVID-related illnesses in intensive care fell slightly to 130, following nearly a week of increasing numbers.
However, the overall number of people hospitalized with COVID-19 climbed to 212, the most at any point during Step 3 of the province's reopening plan.
Here are some other key pandemic indicators and figures from the Ministry of Health's daily provincial update:
Seven-day average of daily cases: 534, its highest point since June 11.
Tests completed: 26,096.
Provincewide test positivity rate: 2.7 per cent.
Active cases: 4,660.
Patients in ICU with COVID-related illnesses: 130; 78 needed a ventilator to breathe.
Deaths: One, bringing the provincial total to 9,451.
Vaccinations: 82.1 per cent of Ontarians age 12 and up now have at least one dose of a COVID-19 vaccine, and 74.6 per cent are fully immunized.
On Saturday, the province reported 46,629 additional shots had been administered. Of those,14,988 people received their first dose, while 31,641 received their second dose.
Ontario: New daily cases of COVID-19