Food Safety Report: Great Value Hamburgers, Walmart, 150 Barnum Avenue Cutoff, Stratford, CT 06614, USA 8 months ago • details 20 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps Suspected source: great value hamburgers Onset: 1 to 2 days Duration: 12 to 24 hours Sick: Me