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Antimicrob Agents Chemother. 2011 Aug;55(8):3932-5. doi: 10.1128/AAC.00012-11. Epub 2011 Jun 6.

Structural variations of staphylococcal cassette chromosome mec type IVa in Staphylococcus aureus clonal complex 8 and unrelated lineages.

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  • 1Department of Veterinary Disease Biology, Faculty of Life Sciences, University of Copenhagen, Stigbøjlen 4, 1870 Frederiksberg C, Denmark. peda@life.ku.dk

Abstract

PCR mapping of staphylococcal cassette chromosome mec type IVa and adjacent mobile elements in 94 methicillin-resistant Staphylococcus aureus (MRSA) strains identified two primary structures (A and B) that could be further classified into two (A1 and A2) and five (B1 to B5) variants, primarily based on structural differences in the orfX-J3 region. While spa type t008 (USA300) invariably contained the A variants, other spa types belonging to clonal complex 8 and unrelated lineages generally contained B variants. These findings have important implications for the typing and identification of MRSA strains containing B variants.

PMID:
21646488
[PubMed - indexed for MEDLINE]
PMCID:
PMC3147619
Free PMC Article
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