Recurrence of heterogeneous methicillin-resistant Staphylococcus aureus (MRSA) among the MRSA clinical isolates in a Japanese university hospital.

Abstract excerpt

OBJECTIVES: In the early 1980s, heterogeneous methicillin-resistant Staphylococcus aureus (hetero-MRSA) strains were predominant in the University of Tokyo Hospital. But, in the 1990s, they were completely substituted by homogeneously highly methicillin-resistant S. aureus (homo-MRSA) strains. Since 2000, however, we started observing an increase in MRSA strains with low cefazolin MICs (MRCLSA). This study was...

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