Food Safety Report: Denny's, 730 Shelburne Rd, South Burlington, VT 05403, USA 1 year ago • details 36 Comments Comment Suspected food poisoning. Symptoms: Nausea, Vomiting, Fever, Stomach Pain, Chills Suspected source: Hamburger meat Onset: 12 to 24 hours Duration: 12 to 24 hours Sick: Me