Objective To study on homology of Vibrio parahaemolyticus(VP) isolated from a case of food poisoning by pulsed-field gel electrophoresis(PFGE),and to provide a reference for the traceability of VP causing food poisoning. Methods A total of 7 cases and 5 cases of anal swabs from patients and kitcheners,5 cases from food retentions and 8 cases from environmental samples were collected and determined. Biochemical identification,serological typing,virulence gene detection and PFGE were performed. Results The se...