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J. Vet. Sci. 2019; 20(1): 87-90  https://doi.org/10.4142/jvs.2019.20.1.87
Molecular epidemiology of sequence type 33 of Shiga toxin-producing Escherichia coli O91:H14 isolates from human patients and retail meats in Korea
Jun Bong Lee1, Se-Kye Kim1, Seon Mi Wi1, Young-Jae Cho1, Tae-Wook Hahn1, Jae-yon Yu2, Sungsun Kim2, Sahyun Hong3, Jonghyun Kim2,*, Jang Won Yoon1,*
1College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
2Division of Bacterial Disease Research, Center for Infectious Diseases Research, Korea National Institute of Health, Centers for Disease Control and Prevention, Cheongju 28159, Korea
3Division of Bacterial Disease, Center for Laboratory Control of Infectious Diseases, Center for Disease Control and Prevention, Cheongju 28159, Korea
Correspondence to: *Tel: +82-33-250-8791; Fax: +82-33-259-5625; E-mails: jwy706@kangwon.ac.kr (JW Yoon), micro487@hanmail.net (J Kim)
Received: August 31, 2018; Revised: October 9, 2018; Accepted: October 18, 2018; Published online: January 31, 2019.
Abstract
Sequence type (ST) 33 of Shiga toxin-producing Escherichia coli (STEC) strain O91:H14 has been proposed as a potential domestic clone of STEC in Korea because of its high prevalence among human patients with mild diarrhea or asymptomatic carriers. Herein, the clonal diversity of 17 STEC O91:H14 isolates of ST33 during 2003 to 2014 was analyzed by pulsed-field gel electrophoresis, including 14 isolates from human patients and 3 from retail meats. Their virulence characteristics, acid resistance, and antimicrobial susceptibility were also determined. Our results showed that all isolates were clustered mainly into three different pulsotypes and were likely low pathogenic without antimicrobial resistance.
Keywords: Shiga toxin, Escherichia coli, Multilocus sequence type, O91, Korea


© 2019 The Korean Society of Veterinary Science.

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.