Annals of Clinical Microbiology

The Korean Society of Clinical Microbiology (대한임상미생물학회)
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Serotyping and Antimicrobial Susceptibility of Salmonella Isolated in Korea in 2015

  • Si Hyun Kim (Department of Clinical Laboratory Science, Semyung University) ;
  • Eun Hee Park (Department of Infectious Disease, Busan Institute of Health and Environment) ;
  • In Yeong Hwang (Department of Infectious Disease, Busan Institute of Health and Environment) ;
  • Hyukmin Lee (Department of Laboratory Medicine, Yonsei University College of Medicine) ;
  • Sae Am Song (Department of Laboratory Medicine, Inje University College of Medicine) ;
  • Miae Lee (Department of Laboratory Medicine, Ewha Womans University College of Medicine) ;
  • Seungok Lee (Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea) ;
  • Soo Young Kim (Department of Laboratory Medicine, College of Medicine, The Catholic University of Korea) ;
  • Jin Ju Kim (Department of Laboratory Medicine, Inha University College of Medicine) ;
  • Jong Hee Shin (Department of Laboratory Medicine, Chonnam National University Medical School) ;
  • Seong Geun Hong (Department of Laboratory Medicine, CHA Bundang Medical Center, CHA University) ;
  • Kyeong Seob Shin (Department of Laboratory Medicine, Chungbuk National University College of Medicine) ;
  • Sunjoo Kim (Department of Laboratory Medicine, Gyeongsang National University College of Medicine) ;
  • Nam Hee Ryoo (Department of Laboratory Medicine, Keimyung University College of Medicine) ;
  • Woonhyoung Lee (Department of Laboratory Medicine, Kosin University College of Medicine) ;
  • Sook Jin Jang (Department of Laboratory Medicine, College of Medicine, Chosun University) ;
  • Jeong Hwan Shin (Department of Laboratory Medicine, Inje University College of Medicine)
  • Received : 2019.01.27
  • Accepted : 2019.08.07
  • Published : 2019.09.20
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Abstract

Background Salmonella is an important pathogen that causes gastroenteritis and sepsis in humans. Recently, changes in serotype prevalence and an increase in antimicrobial resistance have been reported. This study investigated the distribution of Salmonella serotypes and determined the antimicrobial susceptibility of various strains. Methods We collected 113 Salmonella isolates other than Salmonella serotype Typhi from 18 university hospitals in 2015. The serotypes were identified by Salmonella antisera O and H according to the Kauffman White scheme. Antimicrobial susceptibility tests for 12 antibiotics were performed using the disk diffusion method or E-test. Results We identified 22 serotypes. Serotype group B (44.2%) was the most common, followed by groups C (34.5%) and D (21.2%). Salmonella I 4,[5],12:i:- (23.0%), S. Enteritidis (16.8%), and S. Typhimurium (12.4%) were the most common species. Resistance rates for ampicillin, chloramphenicol, ceftriaxone, and trimethoprim/sulfamethoxazole were 46.9%, 18.5%, 8.8%, and 5.3%, respectively. The intermediate resistance rate to ciprofloxacin was 29.2%. Six isolates were extended-spectrum β-lactamase (ESBL) producers, including 5 blaCTX-M-15 and 1 blaCTX-M-55. Conclusion There have been changes in the serotype prevalence and antimicrobial resistance of Salmonella in Korea, with a high prevalence of CTX-M 15-positive strains. Continuous monitoring of Salmonella serotypes and antimicrobial resistance is warranted.

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