Jewel Osco Salmonella Outbreak
In June 2104 Cook County Department of Public Health (CCDPH) and the Illinois Department of Public Health (IDPH) investigated an outbreak of Salmonella Typhimurium among persons who had consumed chicken or deli products from Jewel Osco, a grocery store located in Tinley Park, Illinois. In total 19 case patients were identified. Fourteen patients were laboratory confirmed with Salmonella Typhimurium, five patients were considered to be “probable” cases. Dates of illness onset ranged from May 9 to June 11. Two additional case-patients who were laboratory confirmed with Salmonella Typhimurium were identified with symptom on June 15 and June 25. They both had exposure to a previously identified household member will illness associated with this outbreak. Eight outbreaks associated case patients required hospitalization and three others visited their physician’s office.
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.