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Journal of Clinical Microbiology, August 1998, p. 2254-2257, Vol. 36, No. 8
Institut für Hygiene, Freie
Universität Berlin, Berlin, Germany
Received 16 January 1998/Returned for modification 5 March
1998/Accepted 24 April 1998
Mannitol salt agar was evaluated for detection of oxacillin
resistance in 136 Staphylococcus aureus isolates. All
mecA-positive isolates (n = 54) were
correctly categorized as oxacillin resistant by the disk diffusion test
(1-µg disk; zone diameter, <16 mm); the specificity was 97.6%. Agar
screening (2 µg of oxacillin per ml) revealed a sensitivity of 98.1%
and a specificity of 95.1%.
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Evaluation of Mannitol Salt Agar for Detection of Oxacillin
Resistance in Staphylococcus aureus by Disk Diffusion and
Agar Screening
*
Corresponding author. Mailing address: Institut
für Hygiene, Freie Universität Berlin, Hindenburgdamm
27, 12203 Berlin, Germany. Phone: 49 30 8445 3680. Fax: 49 30 8445 3682.
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