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High prevalence and widespread distribution of multi-resistant Escherichia coli isolates in pigs and poultry in China

文献类型： 外文期刊

作者： Jiang, Hong-Xia 1 ; Lue, Dian-Hong; Chen, Zhang-Liu 1 ; Wang, Xiu-Mei 1 ; Chen, Ji-Rong 1 ; Liu, Ya-Hong 1 ; Liao, 1 ;

作者机构： 1.S China Agr Univ, Coll Vet Med, Guangdong Prov Key Lab Vet Pharmaceut Dev & Safet, Guangzhou 510642, Guangdong, Peoples R China

2.S China Agr Univ, Coll Vet Med, Guangdong Prov Key Lab Vet Pharmaceut Dev & Safet, Guangzhou 510642, Guangdong, Peoples R

关键词： Multi-antimicrobial resistance;Transmission;Escherichia coli;Pigs;Poultry;PFGE

期刊名称：VETERINARY JOURNAL （ 影响因子：2.688； 五年影响因子：2.857 ）

ISSN： 1090-0233

年卷期： 2011 年 187 卷 1 期

页码：

收录情况： SCI

摘要： Escherichia coli play an important ecological role within resistant bacteria populations, and can be used as a bio-indicator of antimicrobial resistance. The aim of the present study was to use this feature of E. coli to investigate the prevalence of antimicrobial resistance and the degree of cross-species transmission of bacteria in pigs and poultry in China. A total of 592 E. coli strains, isolated from pigs and poultry (healthy and diseased animals), were tested for resistance to 22 antimicrobials representing eight antimicrobial drug types. E. coli isolates had high rates of resistance to ampicillin (99.5%), doxycycline (95.6%), tetracycline (93.4%), trimethoprim-sulfamethoxazole (74.3%), amoxicillin (65.1%), streptomycin (54.7%), and chloramphenicol (50.2%). Resistance to cephalosporins, quinolones, and aminoglycosides was also quite prevalent. The majority (81%) of isolates demonstrated multi-antimicrobial resistance, most commonly to 5-6 different antimicrobial types. One isolate was resistant to all 22 antimicrobials. Twenty-two cultures exhibiting multi-antimicrobial resistance were analysed by pulsed-field gel electrophoresis (PFGE) to assess their distribution between farms. Three distinct PFGE types were identified, indicating inter-farm transmission of multi-antimicrobial-resistant bacteria. The study confirmed the presence and transmission of multi-antimicrobial resistant E. coli strains amongst pigs and poultry in China and highlights the urgent need for appropriate monitoring programmes. (C) 2009 Elsevier Ltd. All rights reserved.

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