A multistate outbreak of Salmonella Enteritidis infections was due to the consumption of undercooked, frozen, stuffed chicken entrees. The outbreak strain of Salmonella Enteritidis was isolated from samples of the products. The chicken was distributed nationwide by Serenade Foods Division of Milford, Indiana, and Aspen Foods of Chicago, Illinois. It was believed that the breaded and browned chicken appeared cooked which led consumers to under-cook the entrees before eating them. Minnesota health officials linked the outbreak to the chicken through common food histories of case-patients and genetic fingerprinting of the bacteria. Related illnesses were reported from twelve states.