Food Safety Report: Panera Bread, 901 County Road 42 West, Burnsville, MN, USA 1 year ago • details 34 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Stomach Pain, Cramps, Headache Suspected source: Panera Broccoli Cheddar soup Onset: Less than 4 hours Duration: 12 to 24 hours