Food Safety Report: Pizza Hut, Pizza Hut, North Center Avenue, Merrill, Wisconsin, USA 1 year ago • details 9 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps, Chills, Headache Suspected source: Pizza hut Pizza mushrooms and black olives Onset: 4 to 12 hours Duration: 12 to 24 hours Sick: Me