Food Safety Report: Spinach, Walmart Supercenter, Indian Ridge Boulevard, Mishawaka, IN, USA 2 years ago • details 48 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps Suspected source: Frozen spinach Onset: Less than 4 hours Duration: 4 to 12 hours Additional information: At frozen spinach last… See more