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Distribution of antimicrobial resistance among different serovars of Haemophilus parasuis isolates

文献类型： 外文期刊

作者： Zhou, Xueli 1 ; Xu, Xiaojuan 1 ; Zhao, Yaxin 1 ; Chen, Pin 1 ; Zhang, Xuan 1 ; Chen, Huanchun 1 ; Cai, Xuwang 1 ;

作者机构： 1.Huazhong Agr Univ, Coll Vet Med, Div Anim Infect Dis, State Key Lab Agr Microbiol, Wuhan 430070, Peoples R China

2.Anhui Acad Agr Sci, Inst Anim Husb & Vet Med, Hefei 230031, Peoples R China

关键词： Haemophilus parasuis;Antimicrobial;susceptibility;Serovars;Pig

期刊名称：VETERINARY MICROBIOLOGY （ 影响因子：3.293； 五年影响因子：3.599 ）

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收录情况： SCI

摘要： The aim of the present study was to determine the antimicrobial susceptibility of Haemophilus parasuis in China and to investigate possible correlations between antimicrobial resistance and serovars or virulence. The susceptibility of 110 clinical isolates to 22 antimicrobial agents was determined by an agar dilution method. Except 28 isolates (25.5%) were non-typable, the isolates comprising thirteen serovars (1-5, 7-10, and 12-15), with the most prevalent were serovars 4 (14.5%), 5 (26.4%), 12 (9.1%) and 13 (10.9%). All isolates were susceptible to cefotaxime, ceftiofur, azithromycin, chloramphenicol, florfenicol and tilmicosin, and most of them were susceptible to penicillin, ampicillin, cefaclor, levofloxacin, ciprofloxacin, erythromycin, tetracycline, gentamicin, spectinomycin and tiamulin; however, a high level of resistance was encountered for enrofloxacin (70.9%) and trimethoprim/sulphamethoxazole (44.5%). There were 32 antimicrobial antibiograms observed, with 23.6% of the isolates resistant to more than 3 antimicrobial agents. Antimicrobial resistance was observed in every serovar included in this study, but no statistically significant association was observed between the antimicrobial resistance and the serovars or virulence of H. parasuis.

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