Food Safety Report: Olive Garden Italian Restaurant, Humes Road, Janesville, WI, USA 1 year ago • details 13 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps, Headache Suspected source: Chicken Alfredo Onset: 1 to 2 days Duration: 12 to 24 hours Sick: Me