Clinically relevant yeast species identified by sequencing the internal transcribed spacer region of r-RNA gene and Vitek 2 compact (YST card) commercial identification system: Experience in a Tertiary Care Hospital in Assam, Northeast India

Reema Nath, Reeta Bora, Biswajyoti Borkakoty, Lahari Saikia, Pratap ParidaIndian Journal of Medical Microbiology 2017 35(4):588-592In this retrospective study from 2012 to 2015, 333 clinical isolates of yeasts were identified using Vitek 2 Compact System YST ID card (Biomerieux, France) and internal transcribed spacer (ITS) sequencing. Eighteen species were identified by ITS sequencing. Candida albicans was the most common species (46.5%), followed by Candida tropicalis (27%). The total species supported by Vitek System was 11 (61.11%). The sensitivity of the system in identifying these 11 species was 66.66%–100%; specificity 98.37%–100%; positive predictive value 70%–100%, negative predictive value 96.05%–100%, and diagnostic accuracy 96.99%–100%. Diagnostic accuracy of ITS1 and ITS2 sequences individually was 98.49% and 100% using NCBI Genbank database.
Source: Indian Journal of Medical Microbiology - Category: Microbiology Authors: Source Type: research