Food Safety Report: KFC Long John Silver's, E. Semoran Boulevard, Fern Park, Florida, USA 2 years ago • details 31 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Chills, other: Other Suspected source: SEAFOOD Onset: Less than 4 hours Duration: 4 to 12 hours