Food Safety Report: Tomatoes, Walmart Neighborhood Market, South Middleton Road, Nampa, ID, USA 5 months ago • details 1 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps, Headache Suspected source: Tomatoes that weren’t washed Onset: Less than 4 hours Duration: 12 to 24 hours