Food Safety Report: A&W Canada, McKnight &, Edmonton Trail, Calgary, AB, Canada 4 months ago • details 22 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Chills Suspected source: spicy habanero chicken burger a&w Onset: 4 to 12 hours Duration: 12 to 24 hours Sick: Me Additional information: Still a bit sick.