Journal of Clinical Microbiology, September 1999, p. 2789-2792, Vol. 37, No. 9
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Department of Clinical Microbiology,
Received 8 March 1999/Returned for modification 13 April
1999/Accepted 20 May 1999
The MRSA screen test (Denka Seiken Co., Ltd.), a commercially
available, rapid (20-min) slide latex agglutination test for the
determination of methicillin resistance by detection of PBP 2a in
Staphylococcus aureus, was compared with the oxacillin agar screen test and PCR detection of the mecA gene. A total of
563 S. aureus isolates were tested. Two hundred ninety-six
of the isolates were methicillin-susceptible isolates from cultures of blood from consecutive patients. Also, 267 methicillin-resistant isolates that comprised 248 different phage types were tested. Methicillin resistance was defined as the presence of the
mecA gene. Of the 267 mecA gene-positive
isolates, 263 were positive by the MRSA screen test (sensitivity,
98.5%), and all the mecA-gene negative strains were
negative by the MRSA screen test (specificity, 100%). The oxacillin
agar screen test detected methicillin resistance in 250 of the
mecA gene-positive isolates (sensitivity, 93.6%). The
sensitivity of the MRSA screen test was statistically significantly higher than the sensitivity of the oxacillin agar screen test (P < 0.05). The MRSA screen test is a highly
sensitive and specific test for the detection of methicillin
resistance. Also, it offers results within half an hour and is easy to
perform, which makes this test a valuable tool in the ongoing battle
against methicillin-resistant S. aureus.
*
Corresponding author. Mailing address: Department of
Clinical Microbiology, St. Elisabeth Hospital, P.O. Box 747, 5000 AS Tilburg, The Netherlands. Phone: (31) 13-5392650. Fax: (31) 13-5441264. E-mail: a.vgriethuysen{at}worldonline.nl.
This article has been cited by other articles:
| Antimicrob. Agents Chemother. | Clin. Microbiol. Rev. |
|---|---|
| Clin. Vaccine Immunol. | ALL ASM JOURNALS |
|---|