Food Safety Report: Firehouse Subs Ward Parkway Mall, Ward Parkway, Kansas City, MO, USA 2 years ago • details 17 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps, Chills, Headache Suspected source: there Onset: 4 to 12 hours Duration: 4 to 12 hours Sick: Me