Characteristics of non-typhoidal salmonella isolates from human and broiler-chickens in Southwestern Seoul, Korea

Hee-Jin Cheong, Joo Lee Yeon, Sook Hwang In, Yoon Kee Sae, Won Cheong Hye, Joon-Young Song, Man Kim Jun, Ho Park Yong, Ji Hun Jung, Woo Joo Kim

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Non-typhoidal Salmonella (NTS) is an important commensal microorganism. The purpose of this study was to determine the epidemiological relation between NTS isolates from livestock and NTS isolates from human by analyzing antimicrobial susceptibilities and performing molecular typing. We determined the serotypes of 36 human clinical isolates and 64 livestock isolates, performed antimicrobial susceptibility testing against 8 antibiotics, and determined the molecular types of isolated NTS spp. by pulsed field gel electrophoresis (PFGE). In human isolates, S. enteritidis was the most common serotype (17 isolates; 47.2%) and S. typhimurium the second most (8 isolates; 22.2%). In livestock isolates, S. typhimurium was the most common serotype (15 isolates; 23.44%), and S. enteritidis was the second most (14 isolates; 21.88%). Ampicillin and tetracycline resistance were 50% (32/64 isolates) each among broiler-chicken NTS isolates. No human or livestock NTS isolates showed resistance to ciprofloxacin, TMP-SMX, or ceftriaxone. However, 19.4% (7/36) and 46.8% (30/64) of the human and livestock NTS isolates were resistant to nalidixic acid (MIC ≥ 16 mg/mL), respectively. The presence of the three identical PFGE molecular types from human and broiler-chicken NTS isolates suggests the possibility of transmission from livestock to humans.

Original languageEnglish
Pages (from-to)773-778
Number of pages6
JournalJournal of Korean Medical Science
Issue number5
Publication statusPublished - 2007 Oct 1



  • Epidemiology
  • Salmonella enteritidis
  • Salmonella infections
  • Salmonella typhimurium

ASJC Scopus subject areas

  • Medicine(all)

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