Food Safety Report: Costco Wholesale, South 300 West, Salt Lake City, UT, USA 2 years ago • details 27 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Chills Suspected source: Chicken from here Onset: 4 to 12 hours Duration: 4 to 12 hours Sick: 2 people