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Journal of Clinical Microbiology, June 1999, p. 2013-2015, Vol. 37, No. 6
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Evaluation of the New MB Redox System for Detection of Growth of Mycobacteria

Emmanuelle Cambau,* Claudine Wichlacz, Chantal Truffot-Pernot, and Vincent Jarlier

Laboratoire de Bactériologie-Hygiène, Centre National de Référence pour la Surveillance des Infections à Mycobactéries et de Leur Résistance aux Antituberculeux, Groupe Hospitalier Pitié-Salpêtrière, 75651 Paris Cedex 13, France

Received 11 November 1998/Returned for modification 7 January 1999/Accepted 5 March 1999

We evaluated a new mycobacterial culture system, MB Redox, for recovery rate and time to detection of mycobacteria from 742 consecutive respiratory specimens and compared the results to those found with Löwenstein-Jensen (LJ) medium. Twenty specimens (2.7%) were positive for M. tuberculosis: 17 on LJ medium and 19 in MB Redox, with 16 specimens positive in both media. In addition, 24 specimens (3.2%) were positive for nontuberculous mycobacteria (NTM), 20 on LJ medium, 18 in MB Redox, and 14 in both media. For M. tuberculosis, the mean times to detection were 28.9 days on LJ medium and 23.6 days in MB Redox, and for NTM, the mean times to detection were 40.6 days on LJ medium and 32.3 days in MB Redox.

* Corresponding author. Mailing address: Laboratoire de Bactériologie, Groupe Hospitalier Pitié-Salpêtrière, 47 Boulevard de l'Hôpital, 75651 Paris Cedex 13, France. Phone: 33 1 42162071. Fax: 33 1 42162072. E-mail: bacterio-hyg{at}psl.ap-hop-paris.fr.

Journal of Clinical Microbiology, June 1999, p. 2013-2015, Vol. 37, No. 6
0095-1137/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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