Antimicrobial resistance in Salmonella enterica serovar Dublin isolates from beef and dairy sources

被引:36
作者
Davis, Margaret A. [1 ]
Hancock, Dale D.
Besser, Thomas E.
Daniels, Joshua B.
Baker, Katherine N. K.
Call, Douglas R.
机构
[1] Washington State Univ, Dept Vet Microbiol & Pathol, Pullman, WA 99164 USA
[2] Washington State Univ, Dept Vet Clin Sci, Field Dis Invest Unit, Pullman, WA 99164 USA
关键词
Salmonella enterica serovar Dublin; antimicrobial drug resistance; ceftazidime; cattle;
D O I
10.1016/j.vetmic.2006.08.028
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Salmonella enterica serovar Dublin (S. Dublin) is a cattle-adapted Salmonella serovar, so if antimicrobial resistance in S. Dublin arises as a result of antimicrobial use this most likely occurs within the cattle reservoir without impact from antimicrobial use in humans. We tested the antimicrobial resistance of bovine-origin S. Dublin isolates from 1986 through 2004 using a standard disk diffusion method. High proportions of isolates throughout the time period were resistant to one or more antimicrobials, and a marked increase in resistance to ceftazidime occurred between 2000 and 2004. Dairy-origin isolates were more likely to be resistant to several antibiotics than were isolates from beef operations where exposure to antimicrobials is likely to be less frequent. Plasmid analysis of a subset of isolates also supported the hypothesis that antimicrobial resistance traits in the cattle-adapted serovar Dublin were acquired within the bovine host environment.
引用
收藏
页码:221 / 230
页数:10
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