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Korean J. Vet. Serv. 2021; 44(4): 209-216
Published online December 30, 2021
https://doi.org/10.7853/kjvs.2021.44.4.209
© The Korean Socitety of Veterinary Service
김경희ㆍ임현숙ㆍ이정우ㆍ박대현ㆍ양창렬ㆍ조재근*
대구광역시보건환경연구원
Correspondence to : Jae-Keun Cho
E-mail: thinking@korea.go.kr
https://orcid.org/0000-0003-3498-8101
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0). which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
This study was aimed to investigate occurrence and the antimicrobial resistance of Escherichia coli isolates obtained from the feces of wild birds in Daegu. In total, 98 E. coli isolates (17.9%) were obtained from 547 fecal samples of wild birds. The E. coli carried by the birds showed a relatively high rate of antimicrobial resistance to tetracycline (27.6%) and ampicillin (21.4%). Drug resistance of the isolates to the others (penicillins, cephems, carbapenems, aminoglycosides, quinolones, sulfonamides and phenicols) resulted in the rates less than 20%, and all isolates were susceptible to imipenem, ciprofloxacin, cefotetAn, and amikacin. Approximately, 45% E. coli among the isolates were resistant to one or more drugs tested. The higher rate of tetracycline resistance led us to determine the prevalence of the tet genes (tetA, tetB, tetC, tetD and tetE) in the tetracycline-resistant E. coli isolates by using PCR. All isolates of the tetracycline-resistant E. coli contained at least one or more of these tet genes examined. The most prevalent one was tetA (59.3%), and followed by tetB (7.4%) when tested with the selected 5 tet genes. Except tetA and tetB , however, the remaining tet genes (tetC, tetD, and tetE) tested were not found in this study. Nine isolates among the tetracycline-resistant E. coli contained the two (tetA and tetB) determinants of tetracycline resistance, simultaneously.
Keywords Escherichia coli, Wild birds, Antimicrobial agents, Resistance gene
Korean J. Vet. Serv. 2021; 44(4): 209-216
Published online December 30, 2021 https://doi.org/10.7853/kjvs.2021.44.4.209
Copyright © The Korean Socitety of Veterinary Service.
김경희ㆍ임현숙ㆍ이정우ㆍ박대현ㆍ양창렬ㆍ조재근*
대구광역시보건환경연구원
Kyung-Hee Kim , Hyun-Suk Lim , Jung-Woo Lee , Dae-Hyun Park , Chang-Ryoul Yang , Jae-Keun Cho *
Metropolitan Health & Enviornmental Research Institute, Daegu 42183, Korea
Correspondence to:Jae-Keun Cho
E-mail: thinking@korea.go.kr
https://orcid.org/0000-0003-3498-8101
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0). which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
This study was aimed to investigate occurrence and the antimicrobial resistance of Escherichia coli isolates obtained from the feces of wild birds in Daegu. In total, 98 E. coli isolates (17.9%) were obtained from 547 fecal samples of wild birds. The E. coli carried by the birds showed a relatively high rate of antimicrobial resistance to tetracycline (27.6%) and ampicillin (21.4%). Drug resistance of the isolates to the others (penicillins, cephems, carbapenems, aminoglycosides, quinolones, sulfonamides and phenicols) resulted in the rates less than 20%, and all isolates were susceptible to imipenem, ciprofloxacin, cefotetAn, and amikacin. Approximately, 45% E. coli among the isolates were resistant to one or more drugs tested. The higher rate of tetracycline resistance led us to determine the prevalence of the tet genes (tetA, tetB, tetC, tetD and tetE) in the tetracycline-resistant E. coli isolates by using PCR. All isolates of the tetracycline-resistant E. coli contained at least one or more of these tet genes examined. The most prevalent one was tetA (59.3%), and followed by tetB (7.4%) when tested with the selected 5 tet genes. Except tetA and tetB , however, the remaining tet genes (tetC, tetD, and tetE) tested were not found in this study. Nine isolates among the tetracycline-resistant E. coli contained the two (tetA and tetB) determinants of tetracycline resistance, simultaneously.
Keywords: Escherichia coli, Wild birds, Antimicrobial agents, Resistance gene
Cho, Jae-Keun;Kim, Jeong-Mi;Kim, Hwan-Deuk;Kim, Kyung-Hee;
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