›› 2014, Vol. 41 ›› Issue (11): 263-266.

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Study on Serotype and Drug Resistance of Salmonella from Retail Poultry Products and Live Poultry in Shanghai

SHEN Hai-yan1,2, GUO Hui-xia3, XU Xue-bin4, ZHOU Heng3, LIU Zhi-cheng1,2, ZHANG Chun-hong1,2   

  1. 1. Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
    2. Guangdong Common Laboratory of Veterinary Public Health, Guangzhou 510640, China;
    3. College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China;
    4. Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
  • Received:2014-06-05 Online:2014-11-20 Published:2014-12-06

Abstract: The purpose of this study was to understand the pollution condition,popular serotype and drug resistance of Salmonella in farmer's market and supermarket, in Shanghai. A total of 240 chicken samples and 80 chickens' cloaca swabs were obtained from market in 2012. Among them, 70 (21.9%) were positive for Salmonella. Of the 11 serotypes in 70 Salmonella isolates, S.enteritidis (47.1%), S.indiana (17.1%), S.typhimurium (8.6%) and S.derby (8.6%) were prevalent.Drug susceptibility test was conducted among the Salmonella isolates using the Kirby-Bauer disk diffusion method. The highest level of resistance was found for nalidixie acid (75.7%), followed by sulfisoxazole (60.0%), streptomycin (60.0%) and ampicillin (51.4%). No resistance to imipenem was observed in any isolate examined.The isolated chicken Salmonella strains had severe resistance to most drugs. 40 strains of Salmonella were millti-drug resistant,the most resistart strain was resistant to 14 drugs.This study had important practical significance for prevention and control and rational drug use of salmonellosis.

Key words: Salmonella; serotype; drug resistance

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