Food Safety Report: Culver’s, Willow Creek Road, Prescott, AZ, USA 2 years ago • details 7 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Cramps, Headache Suspected source: Cheeseburger Onset: Right away Duration: 4 to 12 hours Sick: 3 people