ABSTRACT
The aim of this study is to understand the condition of contamination and drug resistance of Vibrio parahaemolyticus(Vp) isolated in the aquatic products in the retail market of Shanghai, and provide evidence for prevention and treatment of disease caused by this organism. From May to July of 2008, 273 aquatic products of three species from the fish markets in Shanghai were collected to isolate Vp. It was found that the average rates of contamination with Vp was 38.46%, the rates of contamination in crustacean, shellfish and fishes were 50.96%, 27.12%, and 15.79 % respectively, with a significant difference in the prevalence(P<0.01). All isolates tested for susceptibility to 10 antibiotics by K-B method. Of the 105 isolates examined, all strains were sensitive to ceftriaxone, nalidixic acid and norfloxacin. The resistant rates to ampicillin was 69.52%. while 20 Vp strains showed multiple resistance to many antibiotics. It is concluded that the aquatic products retailed in Shanghai were seriously contaminated by Vp, showing a multi-drug resistance pattern.