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Misidentification of Candida dubliniensis isolates with the VITEK MS
Maya Korem1, Matan Joel Cohen2, Ayelet Michael-Gayego1
1Faculty of Medicine, Hebrew University of Jerusalem Department of Clinical Microbiology and Infectious Diseases, Hadassah Medical Center, Jerusalem, Israel.
Abstract:
The phylogenetic relatedness of Candida dubliniensis and C. albicans may lead to misidentification of C. dubliniensis and underestimation of its clinical significance. We evaluated the performance of VITEK-MS in identifying C. dubliniensis isolates following growth on different culture media. Correct identification was documented in 98% of the isolates grown on blood agar media whereas only 44% were correctly identified from SDA or CHROMagar. The use of non-manufacturer validated media for identifying C. dubliniensis with VITEK-MS, may result in misidentification of these isolates as C. albicans. This finding calls for reassessing the accuracy of fungal isolates identification in local workflows using non-validated culture media.
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