Isolation and characterization of antimicrobial-resistant Escherichia coli from national horse racetracks and private horse-riding courses in Korea
- Authors
- Chung, Yeon Soo; Song, Jae Won; Kim, Dae Ho; Shin, Sook; Park, Young Kyung; Yang, Soo Jin; Lim, Suk Kyung; Park, Kun Taek; Park, Yong Ho
- Issue Date
- Jun-2016
- Publisher
- KOREAN SOC VETERINARY SCIENCE
- Keywords
- Escherichia coli; antimicrobial resistance; class 1 integron; cross-transmission; horse
- Citation
- JOURNAL OF VETERINARY SCIENCE, v.17, no.2, pp 199 - 206
- Pages
- 8
- Journal Title
- JOURNAL OF VETERINARY SCIENCE
- Volume
- 17
- Number
- 2
- Start Page
- 199
- End Page
- 206
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/6901
- DOI
- 10.4142/jvs.2016.17.2.199
- ISSN
- 1229-845X
1976-555X
- Abstract
- Limited information is available regarding horse-associated antimicrobial resistant (AR) Escherichia (E.) coli. This study was designed to evaluate the frequency and characterize the pattern of ARE. colt from healthy horse-associated samples. A total of 143 E. coli (4.6%) were isolated from 3,078 samples collected from three national racetracks and 14 private horse-riding courses in Korea. Thirty of the E. coli isolates (21%) showed antimicrobial resistance to at least one antimicrobial agent, and four of the ARE. coli (13.3%) were defined as multi-drug resistance. Most of the ARE. coli harbored AR genes corresponding to their antimicrobial resistance phenotypes. Four of the ARE. coli carried class 1 integrase gene (intI1), a gene associated with multi-drug resistance. Pulsed-field gel electrophoretic analysis showed no genetic relatedness among ARE. coil isolated from different facilities; however, cross-transmissions between horses or horses and environments were detected in two facilities. Although cross-transmission of ARE. coli in horses and their environments was generally low, our study suggests a risk of transmission of AR bacteria between horses and humans. Further studies are needed to evaluate the risk of possible transmission of horse-associated AR bacteria to human communities through horse riders and horse-care workers.
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