Food Safety Report: McDonald's, Commonwealth Avenue, Mount Pearl, NL, Canada 2 years ago • details 8 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Cramps, Chills, Headache Suspected source: Big mac Onset: 4 to 12 hours Duration: 4 to 12 hours Sick: 2 people