Food Safety Report: Outback Steakhouse, West Osceola Parkway, Kissimmee, FL, USA 2 months ago • details 598 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting Suspected source: Outback salad Onset: 1 to 2 days Duration: 4 to 12 hours Sick: 4 people