The Grey Bruce Health Unit says they are investigating three cases of Covid linked to a field party near Holstein.
The health unit says the party occurred on Nov. 27 with about 100 people attending.
Some of the party goers live in Grey Bruce, with others coming from neighbouring counties.
The health unit is advising anyone who went to this party is a high-risk contact, and should isolate and be tested immediately.
The health unit is urging residents to avoid going to events or family and social gathering outdoors if they or anyone in their household has symptoms, waiting for a test result, or have been directed to isolate.
