Food Safety Report: Wendy's, 5070 S Syracuse St, Denver, CO 80237, USA 6 months ago • details Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps, Chills, Headache Suspected source: Wendy’s chili Onset: 4 to 12 hours Duration: Several days Sick: 2 people Additional information: Wasn’t sick prior