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Antimicrobial Agents and Chemotherapy, January 2006, p. 365-367, Vol. 50, No. 1
0066-4804/06/$08.00+0 doi:10.1128/AAC.50.1.365-367.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.
Laboratory of Antimicrobial Resistant Pathogens, Department of Microbiology, National Institute of Health, KCDC, Seoul, South Korea
Received 21 June 2005/ Returned for modification 1 August 2005/ Accepted 12 October 2005
We identified 25 high-level mupirocin-resistant (MuH) and 21 low-level mupirocin-resistant (MuL) Staphylococcus aureus isolates from eight long-term-care facilities (LTCFs). The pulsed-field gel electrophoresis patterns of 19 MuH and 19 MuL isolates from two facilities were identical for 18 and 15 isolates, respectively. The most predominant mupA restriction fragment length polymorphism type was found in 21 MuH isolates. We conclude that clonal transmission of MuH and MuL S. aureus strains occurred in these LTCFs. This is the first report of clonal transfer of mupirocin resistance in LTCFs.
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