The Minnesota Department of Agriculture said Saturday that there have been no reports of illness and that Coon Rapids-based Parkers Farm Acquisition is cooperating with the investigation.
The company has issued a voluntary recall of several products with various sell-by dates. Consumers who bought these products are urged to return them to the store or throw them away.
The products are distributed nationwide under the Parkers Farm, Parkers, Happy Farms, Central Markets, Hy-Top, Amish Classic, Say Cheez, Win Schuler and Bucky Badger labels.
These items were sold at several stores, including Hy-Vee, Cub, Rainbow, Byerly's, Lunds, Target, Whole Foods, Price Chopper, Nash Finch, Costco, ALDI, Wal-Mart and Brookshire stores.
Listeria is a bacterium that is especially dangerous to pregnant women, newborn babies and those with compromised immune systems. It rarely causes serious illness in healthy people and can be treated with antibiotics. Symptoms include fever, muscle aches, nausea and diarrhea.