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Improved detection of methicillin-resistant Staphylococcus aureus using phenyl mannitol broth containing aztreonam
H Wertheim1, H A Verbrugh, C van Pelt
1Infectious Diseases, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands. wertheim@bacl.azr.nl
Journal of Clinical Microbiology
|June 28, 2001
Abstract:
We tested a phenyl mannitol broth containing ceftizoxime and aztreonam (PHMB(+)) for detection of methicillin-resistant Staphylococcus aureus (MRSA) with reference MRSA strains and, subsequently, with clinical samples (n = 1,098). All reference MRSA strains induced color change in PHMB(+) after 24 to 72 h of incubation. In a clinical setting, 40 MRSA strains were detected with PHMB(+), compared with only 23 detected with a routine method. Thus, this selective broth significantly (P < 0.001) improved the rate of MRSA detection.