JAC Advance Access originally published online on October 13, 2007
Journal of Antimicrobial Chemotherapy 2007 60(6):1258-1263; doi:10.1093/jac/dkm384
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Methicillin-resistant Staphylococcus aureus containing the Panton-Valentine leucocidin gene in Germany in 2005 and 2006
Robert Koch Institute, Wernigerode Branch, 38855 Wernigerode, Germany
Received 29 March 2007; returned 22 June 2007; revised 11 September 2007; accepted 12 September 2007
* Corresponding author. Tel: +49-3943-679246; Fax: +49-3943-679317; E-mail: wittew{at}rki.de
Objectives: The aim of this paper is to attribute Panton-Valentine leucocidin (PVL)-positive methicillin-resistant Staphylococcus aureus (MRSA) to clonal lineages by molecular typing with special reference to isolates exhibiting spa type t008/multilocus sequence type (MLST) ST8 [widely disseminated in the USA as community-associated MRSA (caMRSA) USA300].
Methods: PVL-positive MRSA (n = 117) were detected among 4815 MRSA sent to the German National Reference Laboratory for typing. These isolates were analysed by PFGE, spa typing, multilocus sequence typing, grouping of SCCmec elements and PCR detection of arcA, msr(A), mph(B) and the
6 AT repeat unit in the SACOL0058 sequence.
Results: Among the 117 isolates, 80 exhibited spa type t044 (corresponding to MLST ST80) and 23 exhibited spa type t008/MLST ST8. Other spa types were sporadically represented. Further characterization of isolates exhibiting t008/ST8 by PCR [arcA, msr(A), mph(B),
6 AT repeat signature] indicates the arrival of caMRSA USA300 in Central Europe.
Conclusions: caMRSA ST80 still predominate; however, caMRSA ST8 exhibiting the characteristics of the USA300 clone became the second most frequent. Routine detection of this clone in clinical bacteriology can be easily performed by PCR.
Keywords: community MRSA , genotyping , molecular markers
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