Food Safety Report: Walmart Supercenter, Oklahoma 97, Sand Springs, OK, USA 3 months ago • details 7 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Fever, Stomach Pain, Cramps, Chills, Headache Suspected source: Walmart cake Onset: Less than 4 hours Duration: 12 to 24 hours Additional information: Whipped topping chocolate cake