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Journal of Clinical Microbiology, July 2001, p. 2660-2662, Vol. 39, No. 7
0095-1137/01/$04.00+0 DOI: 10.1128/JCM.39.7.2660-2662.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Improved Detection of Methicillin-Resistant
Staphylococcus aureus Using Phenyl Mannitol Broth
Containing Aztreonam and Ceftizoxime
Heiman
Wertheim,1,*
Henri A.
Verbrugh,1
Cindy
van
Pelt,1
Peter
de
Man,2
Alex
van
Belkum,1 and
Margreet
C.
Vos1
Department of Medical Microbiology and
Infectious Diseases, Erasmus University Medical Center
Rotterdam,1 and Department of Medical
Microbiology, St. Franciscus Gasthuis,2
Rotterdam, The Netherlands
Received 4 January 2001/Returned for modification 20 March
2001/Accepted 18 April 2001
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.
*
Corresponding author. Mailing address: Department of
Medical Microbiology and Infectious Diseases, Academic Hospital
Rotterdam, Dr Molewaterplein 40, 3015 GD Rotterdam, The Netherlands.
Phone: 31.10.4633510. Fax: 31.10.4633875. E-mail:
wertheim{at}bacl.azr.nl.
Journal of Clinical Microbiology, July 2001, p. 2660-2662, Vol. 39, No. 7
0095-1137/01/$04.00+0 DOI: 10.1128/JCM.39.7.2660-2662.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
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