Food Safety Report: McDonald's, 2600 Rue Ontario E, Montreal, QC, Canada 2 months ago • details 13 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Cramps, Chills, Headache Suspected source: fast food Onset: 12 to 24 hours Duration: 4 to 12 hours