Food Safety Report: Salad, San Cristóbal de las Casas, Chis., Mexico 1 year ago • details 2 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Headache Suspected source: Salad Onset: 1 to 2 days Duration: 12 to 24 hours Sick: Me