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Detection and chara...
Detection and characterisation of SCCmec remnants in multiresistant methicillin-susceptible Staphylococcus aureus causing a clonal outbreak in a Swedish county
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- Lindqvist, Maria (author)
- Östergötlands Läns Landsting,Linköpings universitet,Klinisk mikrobiologi,Hälsouniversitetet,Vårdhygien
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- Isaksson, Barbro (author)
- Östergötlands Läns Landsting,Linköpings universitet,Klinisk mikrobiologi,Hälsouniversitetet,Vårdhygien
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- Grub, C. (author)
- Oslo University Hospital
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- Jonassen, T. Ö. (author)
- Oslo University Hospital
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- Hällgren, Anita (author)
- Östergötlands Läns Landsting,Linköpings universitet,Infektionsmedicin,Hälsouniversitetet,Infektionskliniken i Östergötland
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(creator_code:org_t)
- 2011-05-18
- 2012
- English.
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In: European Journal of Clinical Microbiology and Infectious Diseases. - : Springer Verlag (Germany). - 0934-9723 .- 1435-4373. ; 31:2, s. 141-147
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- The purpose of this study was to investigate if multiresistant methicillin-susceptible Staphylococcus aureus (MR-MSSA) causing a clonal outbreak in A-stergotland County, Sweden, were derived from methicillin-resistant S. aureus (MRSA) by carrying remnants of SCCmec, and, if so, to characterise this element. A total of 54 MSSA isolates with concomitant resistance to erythromycin, clindamycin and tobramycin from 49 patients (91% clonally related, spa type t002) were investigated with the BD GeneOhm MRSA assay and real-time polymerase chain reaction (PCR) targeting the SCCmec integration site/SCCmec right extremity junction. DNA sequencing of one isolate representing the MR-MSSA outbreak clone was performed by massive parallel 454 pyrosequencing. All isolates that were part of the clonal outbreak carried SCCmec remnants. The DNA sequencing revealed the carriage of a pseudo-SCC element 12 kb in size, with a genomic organisation identical to an SCCmec type I (TM) I (TM) element, except for a 41-kb gap. This study demonstrates the presence of a pseudo-SCC element resembling SCCmec type II among MR-MSSA, suggesting possible derivation from MRSA. The presence of SCCmec remnants should always be considered when SCCmec typing is used for MRSA detection, and may not be suitable in locations with a high prevalence of MR-MSSA, since this might give a high number of false-positive results.
Keyword
- MEDICINE
- MEDICIN
Publication and Content Type
- ref (subject category)
- art (subject category)
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