Objective:To understand the relationship between patients and Vibrio parahaemolyticus strains isolated from food;to understand the virulence gene distribution in Vibrio parahaemolyticus isolates from food.Methods:The strains isolated from food were analyzed with PFGE and three virulence genes distributions were determined with PCR.Results:The 55 strains of O1-O4 Vibrio parahaemolyticus were divided into 50 PFGE patterns.The three virulence genes distributions were:12 were positive for tdh;55 were positive f...