Food Safety Report: Taco Bell • Oxígeno, Heredia, Costa Rica 1 year ago • details 5 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Cramps, Chills, Headache Suspected source: Flour tortilla was undercooked. undercooked bread from cheesy melt. Onset: Less than 4 hours Duration: 12 to 24 hours Sick: Me