Food Safety Report: Wendy's, South 9th Street, Columbia, MO, USA 2 years ago • details 42 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Chills Suspected source: Burgers from fast food Onset: 4 to 12 hours Duration: 4 to 12 hours Sick: 2 people