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Journal of Clinical Microbiology, September 1998, p. 2439-2442, Vol. 36, No. 9
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

Evaluation of the RapID CB Plus System for Identification of Coryneform Bacteria and Listeria spp.

Guido Funke,1,* Katja Peters,1 and Max Aravena-Roman2

Department of Medical Microbiology, University of Zürich, CH-8028 Zürich, Switzerland,1 and Department of Microbiology and Infectious Diseases, Western Australian Centre for Pathology and Medical Research, Nedlands, WA 6009, Australia2

Received 6 April 1998/Accepted 22 May 1998

In a stress test, the recently introduced RapID CB Plus system (Remel Inc. [formerly Innovative Diagnostic Systems], Norcross, Ga.) was challenged with a diverse set of gram-positive rods comprising 345 strains of coryneform bacteria and 33 strains of Listeria spp. representing a total of 49 different taxa. Overall, within 4 h, the system correctly identified 80.9% of the strains on the species level and 12.2% of the strains on the genus level. Only 3.7% strains were misidentified, and for 3.2% of the strains no identification was provided. Difficulties with the system were mainly due to occasional uncertainties in reading reactions for acid production from carbohydrates and, to a lesser extent, aminopeptidase reactions. It is concluded that the system may also perform well under the conditions of a routine clinical laboratory.

* Corresponding author. Present address: Department of Medical Microbiology, Limbach & Colleagues Laboratories, Im Breitspiel 15, D-69126 Heidelberg, Germany. Phone: 49-6221-3432-125. fax: 49-6221-3432-263.

Journal of Clinical Microbiology, September 1998, p. 2439-2442, Vol. 36, No. 9
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.


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Copyright © 1998 by the American Society for Microbiology. All rights reserved.