Food Safety Report: A&W Canada, Aberdeen Mall (Food Court, Trans-Canada Highway, Kamloops, BC, Canada 6 months ago • details 3 Suspected food poisoning. Symptoms: Vomiting, Stomach Pain, Cramps, Chills Suspected source: Onion rings Onset: 4 to 12 hours Duration: 12 to 24 hours Sick: 2 people