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Volume 64, Issue 3

Evaluation of the Speed-Oligo Mycobacteria assay for the identification of nontuberculous mycobacteria Free

Abstract

Nontuberculous mycobacteria (NTM) causing human infectious disease have become increasingly common. Rapid and accurate identification to the species level is, therefore, critical. The Speed-Oligo Mycobacteria assay is an oligochromatographic method that was made available recently for the identification and differentiation of mycobacteria. The present study aimed to evaluate the performance of the Speed-Oligo Mycobacteria assay for the identification of NTM. We examined a total of 62 strains (9 type strains, 19 reference strains and 34 clinical isolates) belonging to 13 different species (, , BCG, , , and ). The Speed-Oligo Mycobacteria assay was performed according to the manufacturer’s instructions. Discrepant results between Speed-Oligo Mycobacteria and the original identification were reassessed by the Speed-Oligo Mycobacteria assay and resolved by the GenoType Mycobacterium CM assay and by sequencing of 16S rRNA and protein-encoding genes. We found 93.5 % (58/62) concordance for the identification of NTM as compared with the original identification. Three strains were erroneously identified by Speed-Oligo Mycobacteria: one strain was identified as complex, and one strain and one strain were both identified as . Moreover, one strain was not identified by Speed-Oligo Mycobacteria since it did not react with any species-specific probe. For these strains, sequencing of the genes 16S rRNA and and the GenoType Mycobacterium CM assay were performed. The Speed-Oligo Mycobacteria assay can be a useful tool for the rapid and easy identification of the most common NTM. If applied in clinical practice it could reduce diagnostic delays and contribute to correct clinical and better management of infections caused by NTM.

  • Received:
  • Accepted:
  • Published Online:
© Microbiology Society
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/content/journal/jmm/10.1099/jmm.0.000025
2015-03-01
2024-04-18
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Evaluation of the Speed-Oligo Mycobacteria assay for the identification of nontuberculous mycobacteria
J. Med. Microbiol. 64, 283 (2015); https://doi.org/10.1099/jmm.0.000025
/content/journal/jmm/10.1099/jmm.0.000025
/content/journal/jmm/10.1099/jmm.0.000025
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