Antimicrobial Resistance Trends Among Escherichia coli Isolates Obtained from Dairy Cattle in the Northeastern United States, 2004-2011

被引:16
|
作者
Cummings, Kevin J. [1 ]
Aprea, Victor A. [2 ]
Altier, Craig [3 ]
机构
[1] Texas A&M Univ, Coll Vet Med & Biomed Sci, Dept Vet Integrat Biosci, College Stn, TX 77843 USA
[2] Wicked Device LLC, Ithaca, NY USA
[3] Cornell Univ, Coll Vet Med, Dept Populat Med & Diagnost Sci, Ithaca, NY 14853 USA
关键词
MEDIATED QUINOLONE RESISTANCE; ANTIBIOTIC-RESISTANCE; MULTIDRUG-RESISTANCE; SALMONELLA-ENTERICA; DRUG-RESISTANCE; EFFLUX PUMPS; FOOD; SUSCEPTIBILITY; ANIMALS; FLUOROQUINOLONE;
D O I
10.1089/fpd.2013.1605
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
Monitoring antimicrobial resistance trends among bacteria isolated from food animals and people is necessary to inform risk analyses and guide public policy regarding antimicrobial use. Our objectives were to describe the antimicrobial resistance status of Escherichia coli isolates from dairy cattle in the northeastern United States and to identify trends in resistance to selected antimicrobial agents over time. We collected data retrospectively for all bovine E. coli isolates that were obtained from samples submitted to Cornell University's Animal Health Diagnostic Center between January 1, 2004 and December 31, 2011. We investigated temporal trends in the prevalence of resistant E. coli for each antimicrobial agent using the Cochran-Armitage trend test. Antimicrobial susceptibility testing was performed on 3373 bovine E. coli isolates from clinical samples submitted during the study period. Overall resistance to each antimicrobial agent ranged from 2.7% (enrofloxacin) to 91.3% (oxytetracycline). There was evidence of a significantly decreasing trend in prevalence of resistance to several agents: chlortetracycline, florfenicol, neomycin, oxytetracycline, spectinomycin, and trimethoprim/sulfamethoxazole. However, a significantly increasing trend in prevalence of resistance to enrofloxacin was also evident. These results do not support the idea that current antimicrobial use practices on dairy operations are driving a general increase in the emergence and dissemination of drug-resistant E. coli in the region served by the laboratory. However, resistance to some drugs remained consistently high during the study period, and increasing resistance to enrofloxacin is a key area of concern.
引用
收藏
页码:61 / 67
页数:7
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