Genetic testing by Pulsed Field Gel Electrophoresis (PFGE) of isolates cultured from stool specimens submitted by case patients was performed by the Illinois Department of Public Health Laboratory. The outbreak strain was identified as PulseNet Pattern Identification Number JPXX01.0324.
Environmental health staff from CCDPH and the Tinley Park Village Inspector conducted an on-site investigation at the Jewel Osco deli on June 11, 2014. The deli was closed for six hours for cleaning and disinfection. All food items were discarded. Food handlers were excluded from work pending negative stool screening tests for Salmonella. Two food handlers were positive for Salmonella Typhimurium strain JPXX01.0324. No leftover foods from the deli or from homes of case-patients were tested.
CCDPH concluded that an outbreak of Salmonella Typhimurium JPXX01.0324 occurred at Jewel Osco deli. Outbreak associated cases consumed deli products or chicken from the store. After the June 11 intervention by health officials, no other cases were reported.