Food Safety Report: Spinach, Walmart Supercenter, Charlotte Pike, Nashville, TN, USA 1 year ago • details 22 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Cramps, Headache Suspected source: Spinach Onset: Less than 4 hours Duration: 12 to 24 hours Sick: 2 people