Food Safety Report: QFC, Southeast 28th Street, Mercer Island, WA, USA 2 months ago • details 6 Comments Comment Suspected food poisoning. Symptoms: Nausea, Vomiting, Chills, Headache Suspected source: Feta cheese Onset: 4 to 12 hours Duration: other: I'm still sick. It's been about 14 hours. I'm still vomit Sick: Me