Food Safety Report: Subway, México (Lic. Benito Juárez), Mexico City, CDMX, Mexico 2 years ago • details 7 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Fever, Stomach Pain, Cramps, Headache Suspected source: Lettuce, Cheese Onset: 4 to 12 hours Duration: Several days Sick: 4 people