Serotype of Vibrio Parahaemolyticus Isolated from Food-Poisoning Patients and Aquatic Products in Guangdong Province in 2006—2008

Objective To research the serotype distribution of Vibrio parahaemolyticus isolated from food-poisoning patients and aquatic products in 2006-2008 in Guangdong Province.Method Slide serum agglutination test was used to detect the serotype of 279 Vibrio parahaemolyticus strains isolated from food-poisoning patients and aquatic products.These strains were collected and isolated under the instruction of Guangdong Surveillance network on food borne diseases and food contamination from the regions covering western Guangdong,northern Guangdong,eastern Guangdong and the Pearl River Delta areas,including 176 food-poisoning isolates and 103 aquatic products isolates.Results In(279 strains of Vibrio parahaemolyticus collected in 2006-2008,15 serotypes were identified for 168 of 176 strains isolated from food-poisoning patients,the total typing-rate was 95.45%,and the main serotype was O3:K6,accounting for 73.30%(129/176);In 103 isolates of aquatic products,40 serotype in 57 strains were typed,mainly centralized on seven serum groups:O1,O2,O3,O4,O5,O10,011,with no popular type,and the total typing-rate was 55.34%.Conclusion The main serotype of Vibrio parahaemolyticus from food-poisoning strains in Guangdong Province was O3:K6,the regional difference was not significant.The serotype of isolates from aquatic products was diversity,and they were different from the serotype of food poisoning strains.