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Journal of Clinical Microbiology, August 2002, p. 2930-2935, Vol. 40, No. 8
0095-1137/02/$04.00+0     DOI: 10.1128/JCM.40.8.2930-2935.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Clinical and Laboratory Features of Mycobacterium mageritense

Richard J. Wallace Jr.,1* Barbara A. Brown-Elliott,1 Leslie Hall,2 Glenn Roberts,2 Rebecca W. Wilson,1,3 Linda B. Mann,1 Christopher J. Crist,1 Sher H. Chiu,4 Robbie Dunlap,4 Maria J. Garcia,5 J. Todd Bagwell,6 and Kenneth C. Jost Jr.4

Departments of Microbiology,1 Pathology, University of Texas Health Center, Tyler,3 Mycobacteriology Mycology Branch, Texas Department of Health,4 Austin Infectious Disease Consultants, Austin, Texas,6 Mayo Clinic, Rochester, Minnesota,2 Departmento de Medicina Preventiva, Facultad de Medicina, Universidad Autonoma de Madrid, Madrid, Spain5

Received 28 November 2001/ Returned for modification 22 January 2002/ Accepted 8 May 2002

Six clinical isolates of the nonpigmented, rapidly growing species Mycobacterium mageritense were recovered from sputum, bronchial wash, blood, sinus drainage, and two surgical wound infections from separate patients in Texas, New York, Louisiana, and Florida. The isolates matched the ATCC type strain by PCR restriction enzyme analysis of the 65-kDa hsp gene sequence of Telenti, high-performance liquid chromatography, biochemical reactions, and partial 16S rRNA gene sequencing. These are the first isolates of this species to be described in the United States and the first isolates to be associated with clinical disease. Susceptibility testing of all known isolates of the species revealed all isolates to be susceptible or intermediate to amikacin, cefoxitin, imipenem, and the fluoroquinolones and sulfonamides but resistant to clarithromycin. Because of their phenotypic and clinical similarity to isolates of the Mycobacterium fortuitum third biovariant complex (sorbitol positive), isolates of M. mageritense are likely to go undetected unless selected carbohydrate utilization or molecular identification methods are used.

* Corresponding author. Mailing address: The University of Texas Health Center, Department of Microbiology, 11937 US Hwy 271, Tyler, TX 75708. Phone: (903) 877-7680. Fax: (903) 877-7652. E-mail: Richard.Wallace{at}uthct.edu.

Journal of Clinical Microbiology, August 2002, p. 2930-2935, Vol. 40, No. 8
0095-1137/02/$04.00+0     DOI: 10.1128/JCM.40.8.2930-2935.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



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