The Forest Heights long-term care home in Kitchener confirmed 79 cases of COVID-19 in residents and seven died.
A press release issued on Saturday also said that 39 staff members tested positive and isolated themselves from their homes.
The long-term care home follows updated provincial testing guidelines, allowing all residents and staff to be tested in an area where an outbreak has occurred.
Officials say Waterloo Region public health “whole house” tests put them in a better position to provide appropriate care and support.
A third of residents tested positive for COVID-19 have no symptoms, the statement said.
All Forest Heights residents who test positive are isolated, and a number of other measures are in place.
Staff wear personal protective equipment, improved cleaning is underway, and meal times and activities have been adjusted to promote physical distance.