Garden-Fresh Foods, Inc., of Milwaukee, WI, is recalling a limited quantity of Spartan Fresh Selections American Potato Salad in 16 oz. packages because it has the potential to be contaminated with Listeria monocytogenes, an organism which can cause serious and sometimes fatal infections in young children, frail or elderly people and others with weakened immune systems. Although healthy individuals may suffer only short-term symptoms such as high fever, severe headache, stiffness, nausea, abdominal pain and diarrhea, Listeria infection can cause miscarriages and stillbirths among pregnant women. Spartan Fresh Selections American Potato Salad was distributed by Spartan Stores in Michigan and Toledo, Ohio. The affected Spartan Fresh Selections American Potato Salad is packaged in square 16 oz. plastic retail containers with a UPC Code Number 0 11213 90320 0 and a use-by date of Sept. 6 (09/06/13/04). There have been no illnesses reported in connection with this product. However, due to the time required to trace illnesses back to a food source, it is impossible to say whether anyone has fallen ill. The potential for contamination was noted after routine testing. Consumers who have purchased this product should not open the package or use the contents. Instead, they should return the product to the location of purchase for a full refund.