Detection of a Point Mutation Associated with High-Level Isoniazid Resistance in Mycobacterium tuberculosis by Using Real-Time PCR Technology with 3′-Minor Groove Binder-DNA Probes

Abstract excerpt

Tuberculosis remains one of the leading infectious causes of death worldwide. The emergence of drug-resistant strains of Mycobacterium tuberculosis is a serious public health threat. Resistance to isoniazid (INH) is the most prevalent form of resistance in M. tuberculosis and is mainly caused by mutations in the catalase peroxidase gene (katG). Among high-level INH-resistant isolates (MIC > or = 2), 89% are...

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