Several cases of a rare strain Salmonella have been traced to a RoJo location on Main Street in Rochester.
It’s part of what Oakland County health officials are calling a cluster.
"It's called a cluster because we do not have a common food source or other type of common source that we have been able to identify," says Dr. Pamela Hackert.
Health officials are investigating 15 recent cases of Salmonella Saintpaul in Oakland County.
Not all are linked to the restaurant.
Symptoms include abdominal pain, diarrhea, and fever.
Salmonella Saintpaul is a rare strain typically tied to farm produce, but without a specific food source, health officials believe it's being spread through personal contact.
"One of the best ways to protect yourself against this is to make sure that everyone be very particularly careful to wash your hands before eating or before preparing food," Hackert says.