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Antimicrobial Agents and Chemotherapy, April 2007, p. 1534-1536, Vol. 51, No. 4
0066-4804/07/$08.00+0 doi:10.1128/AAC.01113-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.
First Linezolid-Resistant Clinical Isolates of Mycobacterium tuberculosis
Elvira Richter,
Sabine Rüsch-Gerdes, and
Doris Hillemann*
Forschungszentrum Borstel, National Reference Center for Mycobacteria, D-23845 Borstel, Germany
Received 4 September 2006/
Returned for modification 10 October 2006/
Accepted 10 January 2007
Linezolid resistance was found in 4 (1.9%) of 210 multidrug-resistant Mycobacterium tuberculosis strains. The MICs of linezolid were 4 µg/ml (one strain) and 8 µg/ml (three strains). Since no mutations were detected in potential target genes, the mechanism of resistance remains unclear.
* Corresponding author. Mailing address: Forschungszentrum Borstel, National Reference Center for Mycobacteria, Parkallee 18, D-23845 Borstel, Germany. Phone: (49)-4537-188761. Fax: (49)-4537-188311. E-mail:
dhillemann{at}fz-borstel.de
Published ahead of print on 22 January 2007.
Antimicrobial Agents and Chemotherapy, April 2007, p. 1534-1536, Vol. 51, No. 4
0066-4804/07/$08.00+0 doi:10.1128/AAC.01113-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.
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