Journal article
Surveillance in Taiwan using molecular epidemiology for extended-spectrum beta-lactamase-producing Klebsiella pneumoniae
Infection control and hospital epidemiology, Vol.25(10), pp.812-818
10/2004
DOI: 10.1086/502301
PMID: 15518021
Abstract
To evaluate intrahospital and interhospital clonal dissemination of extended-spectrum beta-lactamase (ESBL)-producing strains of Klebsiella pneumoniae.
Eight tertiary-care university hospitals and 16 regional hospitals in Taiwan.
Two hundred eleven confirmed ESBL-producing isolates of K. pneumoniae were collected from January 1998 to June 2000. The isolates were characterized by various typing methods, including antibiogram (9 antimicrobial agents), computer-based ribotyping, pulsed-field gel electrophoresis (PFGE), and isoelectric focusing of beta-lactamase.
Ribotyping identified 70 distinct ribogroups among 200 isolates evaluated. Forty-three of these ribogroups were unique. Eleven ribogroups, comprising 115 isolates, were detected in more than one hospital (interhospital dissemination), whereas 16 groups (42 isolates) were detected in more than one patient within a hospital (intrahospital dissemination). The combination of ribotyping and PFGE identified two large epidemic clones, which were called 691.5/PFGE-G and 595.7/PFGE-A. These epidemic clones were detected mainly in the hospitals located in the northern and central regions of Taiwan. However, variation of the profiles of antibiograms and isoelectric focusing was apparent within each clone. In addition, isolates with the same isoelectric focusing profile (isoelectric points 7.9, 8.2, and 8.4) and antibiogram (resistance to 9 compounds evaluated) were present among different molecular-typed clones.
Our results showed that clonal dissemination (both interhospital and intrahospital dissemination) is occurring in several regions of Taiwan. Rapid computer-based ribotyping associated with PFGE demonstrated multiple epidemic clones of ESBL-producing K. pneumoniae in Taiwan. The combination of phenotypic and molecular methods has proved useful to characterize these epidemic clones.
Details
- Title: Subtitle
- Surveillance in Taiwan using molecular epidemiology for extended-spectrum beta-lactamase-producing Klebsiella pneumoniae
- Creators
- Wen-Liang Yu - Chi Mei Medical CenterPatricia L Winokur - University of IowaRonald N Jones - JMI LaboratoriesHélio S Sader - Beaver Kreek Centre
- Resource Type
- Journal article
- Publication Details
- Infection control and hospital epidemiology, Vol.25(10), pp.812-818
- DOI
- 10.1086/502301
- PMID
- 15518021
- ISSN
- 0899-823X
- eISSN
- 1559-6834
- Language
- English
- Date published
- 10/2004
- Academic Unit
- Infectious Diseases; Medicine Administration; Internal Medicine
- Record Identifier
- 9984359681702771
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