Food Safety Report: McDonald's, Stanley Street, Brantford, ON, Canada 2 years ago • details 35 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Cramps Suspected source: there Onset: 12 to 24 hours Duration: 12 to 24 hours Sick: 3 people Additional information: Possibly from French fries as that was the only common food shared