The case, involving a person from Owen Sound, brings the number of active cases of the novel coronavirus in the two counties to six.
So far, 153 cases of COVID-19 have been reported in Gray-Bruce. Eight of these cases were referred to other health services, while 139 have recovered.
There is currently no one hospitalized in the region with a confirmed case of COVID-19 and no facility is in an epidemic state.
No one has died from the virus in Gray-Bruce to date.