Food Safety Report: Frozen Hamburger Patties, Walmart Supercenter, Consumer Square, Plattsburgh, NY, USA 5 months ago • details 28 Suspected food poisoning. Symptoms: Diarrhea, Nausea Suspected source: Frozen hamburger patties Onset: 4 to 12 hours Duration: 4 to 12 hours Sick: Me Additional information: I have never had bad food before from Wal-Mart. This is a first