Food Safety Report: Wendy's, Contour Road, Gaithersburg, MD, USA 4 months ago • details 50 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Cramps, Chills, Headache Suspected source: Wendy’s hamburger Onset: 4 to 12 hours Duration: 12 to 24 hours Sick: Me Additional… See more