Evaluation of phage assay for rapid phenotypic detection of rifampicin resistance in Mycobacterium tuberculosis.

Annals of Clinical Microbiology and Antimicrobials
Sergio YzquierdoJuan Carlos Palomino

Abstract

Conventional methods for susceptibility testing require several months before results can be reported. However, rapid methods to determine drug susceptibility have been developed recently. Phage assay have been reported as a rapid useful tools for antimicrobial susceptibility testing. The aim of this study was to apply the Phage assay for rapid detection of resistance on Mycobacterium tuberculosis strains in Cuba. Phage D29 assay was performed on 102 M. tuberculosis strains to detect rifampicin resistance. The results were compared with the proportion method (gold standard) to evaluate the sensitivity and specificity of Phage assay. Phage assay results were available in 2 days whereas Proportion Methods results were obtain in 42 days. A total of 44 strains were detected as rifampicin resistant by both methods. However, one strains deemed resistant by Proportion Methods was susceptible by Phage assay. The sensitivity and specificity of Phage assay were 97.8 % and 100% respectively. Phage assay provides rapid and reliable results for susceptibility testing; it's easy to perform, requires no specialized equipment and is applicable to drug susceptibility testing in low income countries where tuberculosis is a major public health pr...Continue Reading

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Citations

Nov 19, 2008·Antimicrobial Agents and Chemotherapy·Agustina I de la IglesiaHéctor R Morbidoni
Dec 24, 2011·Applied and Environmental Microbiology·Keyang LiuJinsong Li
Jan 11, 2007·Annals of Clinical Microbiology and Antimicrobials·Hamidou TraoreRuth McNerney

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Methods Mentioned

BETA
PCR
phage assay

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