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Clinical isolates of Staphylococcus intermedius masquerading as methicillin-resistant Staphylococcus aureus
Sudha Pottumarthy1, Jeffrey M Schapiro, Jennifer L Prentice
1Department of Laboratory Medicine, University of Washington, 1959 NE Pacific St., Box 357110, Seattle, WA 98195, USA.
Journal of Clinical Microbiology
|December 8, 2004
Abstract:
Staphylococcus intermedius is a zoonotic organism that can be associated with human disease. We report two separate cases of S. intermedius infection in which a false-positive rapid penicillin binding protein 2a latex test in conjunction with the phenotypic properties of beta-hemolysis and coagulase positivity allowed the clinical isolates to masquerade as methicillin-resistant Staphylococcus aureus. 16S rRNA gene sequencing and the absence of mecA revealed the strains to be methicillin-susceptible S. intermedius.