Wellington-Dufferin-Guelph Public Health has found a single case of active tuberculosis in the Homewood Health Centre.
Chuck Ferguson, Manager of Communications at Public Health, says tuberculosis infections are fairly rare in Canada.
"For instance, in 2016 there were 1,737 cases in Canada. There were 600 in Ontario ... and every year, Wellington-Dufferin-Guelph deals with five to six cases."
Ferguson says Public Health officials have a few different checks in place to ensure nobody else will become infected.
"We make sure everyone is tested (at the site of potential exposure). We have specialised tuberculosis clinics that we run. We also work in the community with people who have tuberculosis to ensure they are taking the proper medicines."
The single case from Guelph is being contained and there is no immediate risk to the public.
Symptoms of tuberculosis include coughing, chest pain, and unintentional weight loss.