Analysis of 160 serotypes and drug resistance of Vibrio parahaemolyticus

[Objective] To ascertain the serotype and the drug resistance of Vibrio parahaemolyticus in Pudong New Area of Shanghai. [Methods] The slide serum agglutination test was used to detect the 160 serotypes of Vibrio parahaemolyticus and the K-B method was used to test the drug resistance. [Results] In 59 strains isolated from food poisoning,7 serotypes were typed in 56 strains.The total typing rate was 94.92% and the main serotype was O3∶K6 accounting for 77.97%.In 101 strains isolated from aquatic products,22 serotypes with no popular type were typed in 32 strains and the total typing rate was 31.68%.The test of drug resistance showed high resistance to Ampicillin and 100.00% sensitive to Amoxicillin/clavulanic acid,Cefotaxime,Ceftazidime,Cefepime and Chloramphenicol. [Conclusion] The main serotype of Vibrio parahaemolyticus from food poisoning strains in Pudong was O3∶K6.The serotypes isolated from aquatic products were diverse and different from the serotypes of food poisoning strains.Vibrio parahaemolyticus in Pudong did not mutate widely in drug resistance test.