CHROMagarTM Candida Plus: A novel chromogenic agar that permits the rapid identification of Candida auris.

Medical Mycology
Andrew M BormanElizabeth M Johnson

Abstract

Candida auris is a serious nosocomial health risk, with widespread outbreaks in hospitals worldwide. Successful management of such outbreaks has depended upon intensive screening of patients to identify those that are colonized and the subsequent isolation or cohorting of affected patients to prevent onward transmission. Here we describe the evaluation of a novel chromogenic agar, CHROMagarTM Candida Plus, for the specific identification of Candida auris isolates from patient samples. Candida auris colonies on CHROMagarTM Candida Plus are pale cream with a distinctive blue halo that diffuses into the surrounding agar. Of over 50 different species of Candida and related genera that were cultured in parallel, only the vanishingly rare species Candida diddensiae gave a similar appearance. Moreover, both the rate of growth and number of colonies of C. auris recovered from swabs of pure and mixed Candida species were substantially increased on CHROMagarTM Candida Plus agar when compared with growth on the traditional mycological isolation medium, Sabouraud dextrose agar. Taken together, the present data suggest that CHROMagarTM Candida Plus agar is an excellent alternative to current conventional mycological media for the screening ...Continue Reading

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