Food Safety Report: Panera Bread, Bancroft Road, Walnut Creek, CA, USA 2 years ago • details 50 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Stomach Pain, Cramps, Headache Suspected source: panera soup Onset: 4 to 12 hours Duration: 4 to 12 hours Additional information: Had the autumn squash soup… See more