Food Safety Report: Walmart Supercenter, West Atlantic Boulevard, Margate, FL, USA 1 month ago • details 19 Suspected food poisoning. Symptoms: Nausea, Vomiting, Stomach Pain, Headache Suspected source: Walmart chimichanga Onset: Less than 4 hours Duration: 4 to 12 hours Sick: Me Additional information: I microwaved the burrito and it was very greasy.