Food Safety Report: H-E-B plus!, South Cage Boulevard, Pharr, TX, USA 2 years ago • details 12 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Fever, Stomach Pain, Cramps, Headache Suspected source: Ceasar Salad pre packaged salad. Onset: 4 to 12 hours Duration: Several days