Abstract
The rising number of resistant and multidrug-resistant Mycobacterium tuberculosis strains and the emergence of extensively drug-resistant strains substantiate the urgent demand for rapid and reliable techniques for the detection of drug-resistant TB. In recent years, a multitude of techniques for rapid drug-susceptibility testing have been designed and evaluated. Two different strategies for the assessment of drug resistance can be followed; phenotypic determination has been common practice for years, whereas more recently the genetic detection of mutations that confer for drug resistance has been established. Novel liquid culture-based drug-susceptibility testing techniques have been evaluated; several of them have proved their reliability and accuracy, while others need more evaluation or a different performance due to biosafety risks. Among the molecular tests, line-probe assays seem to be the most promising tools for a rapid and very specific and sensitive detection of multidrug-resistant M. tuberculosis.
Published Version
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