Simcoe Muskoka has 29 new COVID-19 cases listed Tuesday, including six individuals under 17.
Since testing positive, seven people had to be hospitalized.
The numbers released Tuesday shows cases in New Tecumseth, Barrie, Bradford, Innisfil, Essa, Penetanguishene and one pending.
Dr. Charles Gardner says alarm bells are ringing as the infection rates soar.
"We've gone up quite significantly," says Simcoe Muskoka's medical officer of health. "The province has gone up too. We're going up at this point at a more rapid rate than the province."
Four seniors' homes are dealing with COVID-19 outbreaks, Simcoe Manor in Beeton, which had three more cases confirmed in the last 24 hours, Riverwood Senior Living in Alliston, Granite Ridge Retirement Facility in Gravenhurst and Waterford Retirement Community in Barrie.
"We currently have 13 active outbreaks, up from five last week, so that's a substantial increase," Gardner says.
An unnamed manufacturing facility and hair salon in Barrie are among the outbreaks, along with two schools, Hillcrest Public School in Barrie and Bradford District High School.
For a complete list of COVID-19 cases in schools across the region, click here.
Meanwhile, testing centres remain steady with patients.
The clinic on Sperling Drive in Barrie recently reported testing, on average, 300 people per day.
Click here for information on COVID-19 testing centres across the region.
Ontario reported its highest number of new COVID cases in a single day, with 1,050 cases and 14 deaths.
The province recorded completing nearly 25,300 tests in the past 24 hours.