Food Safety Report: Starbucks, Merle Hay Road, Johnston, IA, USA 11 months ago • details Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Chills, Headache Suspected source: Food poisoning Onset: Less than 4 hours Duration: 12 to 24 hours Sick: Me