Food Safety Report: Walmart Supercenter, Wentzville Parkway, Wentzville, MO, USA 1 year ago • details 6 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Fever, Stomach Pain, Cramps, Headache Suspected source: strawberries Onset: 4 to 12 hours Duration: 4 to 12 hours Additional information: molded quickly and strange inner color