Food Safety Report: Jason's Deli, W. O. Ezell Boulevard, Spartanburg, SC, USA 2 years ago • details 11 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Headache Suspected source: Black olives Onset: 12 to 24 hours Duration: 12 to 24 hours Sick: Me