Candida Research Today is a free monthly online journal that collates and summarizes the latest research about Candida, including details on thrush infections, yeast, diet, treatment, symptoms.

Prevalence of Candida dubliniensis among germ tube-positive Candida isolates in a maternity hospital in Kuwait.

Al-Sweih N, Ahmad S, Khan ZU, Khan S, Chandy R

Department of Microbiology, Faculty of Medicine, Kuwait University, Safat, Kuwait.

In this study, 1644 germ tube-positive Candida isolates from a maternity hospital was prospectively examined for the prevalence of Candida dubliniensis. Candida species were isolated from different clinical specimens, but majority (>90%) of them came from high vaginal swabs and urine specimens. The phenotypic and molecular identification methods for C. dubliniensis included production of rough colonies and chlamydospores on simplified sunflower seed agar, determination of assimilation profile by Vitek 2 yeast identification system, specific amplification of rDNA of internally transcribed spacer (ITS)-2 region by semi-nested PCR and direct DNA sequencing of the ITS-1 and ITS-2 regions. Three germ tube-positive Candida isolates were identified as C. dubliniensis with an overall prevalence of 0.2%. Of these, two came from urine specimens and one from a vaginal swab. None of the C. dubliniensis isolates showed resistance against fluconazole, voriconazole and amphotericin B. The study reinforces the usefulness of sunflower seed agar in presumptive identification of C. dubliniensis and confirms the prevailing view that this species forms only a minor constituent of Candida species occurring in vagina or other anatomic sites of non-HIV/AIDS-infected individuals.

Published 23 August 2005 in Mycoses, 48(5): 347-51.
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