The role of horizontal gene transfer in the dissemination of extended-spectrum beta-lactamase-producing Escherichia coli and Klebsiella pneumoniae isolates in an endemic setting

Yohei Doi, Jennifer M. Adams-Haduch, Anton Y. Peleg, Erika M.C. D'Agata

研究成果: Article査読

20 被引用数 (Scopus)

抄録

The contribution of horizontal gene transmission (HGT) in the emergence and spread of extended-spectrum beta-lactamase (ESBL)-producing Gram-negative bacteria during periods of endemicity is unclear. Over a 12-month period, rectal colonization with SHV-5- and SHV-12-producing Escherichia coli and Klebsiella pneumoniae was quantified among a cohort of residents in a long-term care facility. Demographic and clinical data were collected on colonized residents. Transferability of SHV-encoding plasmids and pulsed-field gel electrophoresis were performed to quantify the contribution of HGT and cross-transmission, respectively. A total of 25 (12%) of 214 enrolled patients were colonized with 11 SHV-5- and 17 SVH-12-producing E. coli and K. pneumoniae. Clonally related isolates were detected among multiple residents residing on the same and different wards. Among 12 clonally distinct isolates, HGT of SHV-5- and SHV-12-encoding plasmids was identified among 6 (50%) isolates. HGT among clonally distinct strains contributes to the transmission dynamics of these ESBL-producing Gram-negative bacteria and should be considered when evaluating the spread of these pathogens.

本文言語English
ページ(範囲)34-38
ページ数5
ジャーナルDiagnostic Microbiology and Infectious Disease
74
1
DOI
出版ステータスPublished - 09-2012
外部発表はい

All Science Journal Classification (ASJC) codes

  • Microbiology (medical)
  • Infectious Diseases

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