Food Safety Report: Oasis, Fanshawe College Boulevard, London, ON, Canada 2 years ago • details 6 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Chills, Headache Suspected source: Hash browns Onset: Less than 4 hours Duration: 12 to 24 hours Sick: Me