Molecular epidemiology of multidrug-resistant Acinetobacter baumannii in a single institution over a 10-year period

Runnegar, N., Sidjabat, H., Goh, H. M. S., Nimmo, G. R., Schembri, M. A. and Paterson, D. L. (2010) Molecular epidemiology of multidrug-resistant Acinetobacter baumannii in a single institution over a 10-year period. Journal of Clinical Microbiology, 48 11: 4051-4056. doi:10.1128/JCM.01208-10

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Author Runnegar, N.
Sidjabat, H.
Goh, H. M. S.
Nimmo, G. R.
Schembri, M. A.
Paterson, D. L.
Title Molecular epidemiology of multidrug-resistant Acinetobacter baumannii in a single institution over a 10-year period
Formatted title
Molecular epidemiology of multidrug-resistant Acinetobacter baumannii in a single institution over a 10-year period
Journal name Journal of Clinical Microbiology   Check publisher's open access policy
ISSN 0095-1137
1070-633X
1098-660X
Publication date 2010-11
Sub-type Article (original research)
DOI 10.1128/JCM.01208-10
Open Access Status File (Publisher version)
Volume 48
Issue 11
Start page 4051
End page 4056
Total pages 6
Place of publication Washington, DC, United States
Publisher American Society for Microbiology
Collection year 2011
Language eng
Formatted abstract
Multidrug-resistant Acinetobacter baumannii is a worldwide nosocomial menace. We sought to better understand its behavior through studying the molecular epidemiology of this organism at the Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia, over a 10-year period. Multilocus sequence typing (MLST), semiautomated repetitive sequence-based PCR (rep-PCR), and pulsed-field gel electrophoresis (PFGE) were performed on a selection of 31 A. baumannii isolates collected over the 10-year period to determine their relationships to one another. MLST also allowed us to put this information in a global context. The presence or absence of blaOXA-23 was also established. The presence of blaOXA-23 closely correlated with carbapenem resistance in our collection. Sequence type 92 (ST92) was the dominant sequence type and was present in the hospital for 9 years. There was also evidence of the spread of ST69, ST73, and ST125 (novel) within the hospital, but this was not sustained over long periods. There were only single examples of the novel sequence types ST126 and ST127. The different typing methods clustered the isolates similarly; however, PFGE and rep-PCR were more discriminatory than MLST. Worldwide, ST92 and the associated clonal complex 92 represent the most sampled and widespread sequence type(s) and are also known as European clone 2 and worldwide clonal lineage 2. Antibiotic susceptibility within ST92 is variable, suggesting a role for mechanisms other than antibiotic resistance in its success.
Copyright © 2010, American Society for Microbiology. All Rights Reserved.
Keyword Field gel electrophoresis
Medical center
Typing scheme
Emergence
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: UQ Centre for Clinical Research Publications
Official 2011 Collection
School of Chemistry and Molecular Biosciences
 
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Created: Sun, 21 Nov 2010, 00:03:47 EST