The FDA said the South Elgin, Ill., company discovered some of the sandwiches might be contaminated with Listeria monocytogenes, an organism that can cause serious and sometimes fatal infections in young children, frail or elderly people, and others with weakened immune systems.

The products were sold in vending machines and convenience stores in Illinois, Indiana, Michigan, Missouri, Ohio and Wisconsin in plastic wrappers. The items were Buffalo Chicken Sandwich with Price Look Up # 3707, Cuban Sandwich PLU # 3795, and Asiago Italian PLU #3770.

Consumers with questions can contact the company at 847-741-2544