Food Safety Report: Panera Bread, Hopper Avenue, Santa Rosa, CA, USA 2 years ago • details 38 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Chills, Headache Suspected source: Mediterranean sandwich from there Onset: 4 to 12 hours Duration: 4 to 12 hours Sick: Me