Food Safety Report: Chick-fil-A, East 120th Avenue, Thornton, CO, USA 1 month ago • details 38 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps, Headache Suspected source: Chicken sandwich Onset: 4 to 12 hours Duration: 12 to 24 hours Sick: Me