Food Safety Report: Roberto's Taco Shop, South Decatur Boulevard, Las Vegas, NV, USA 8 months ago • details 48 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Fever, Stomach Pain, Cramps, Chills, Headache Suspected source: Roberto’s Onset: 12 to 24 hours Duration: 4 to 12 hours Sick: Me