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Genetic Relatedness Among Candida tropicalis Isolates From Sporadic Cases of Fungemia in Two University Hospitals in Korea

Published online by Cambridge University Press:  02 January 2015

Jong Hee Shin ,
Mi-Na Kim ,
Dong Hyeon Shin ,
Sook-In Jung ,
Kwang Jin Kim ,
Duck Cho ,
Seung Jung Kee ,
Myung Geun Shin ,
Soon Pal Suh  and
Dong Wook Ryang
Jong Hee Shin*
Affiliation:
Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea
Mi-Na Kim
Affiliation:
Department of Laboratory Medicine, University of Ulsan College of Medicineand Asan Medical Center, Seoul, Korea
Dong Hyeon Shin
Affiliation:
Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
Sook-In Jung
Affiliation:
Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
Kwang Jin Kim
Affiliation:
Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea
Duck Cho
Affiliation:
Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea
Seung Jung Kee
Affiliation:
Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea
Myung Geun Shin
Affiliation:
Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea
Soon Pal Suh
Affiliation:
Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea
Dong Wook Ryang
Affiliation:
Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea
*
Department of Laboratory Medicine, Chonnam National University Medical School, 8 Hakdong Dongku, Gwangju 501-757, South Korea
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Abstract

Objective:

To compare the epidemiology and genetic relatedness of Candida tropicalis isolates causing bloodstream infection (BSI) in two hospitals.

Setting:

Two tertiary-care hospitals in Korea.

Methods:

A retrospective molecular epidemiologic analysis using pulsed-field gel electrophoresis (PFGE) was performed with 49 C. tropicalis isolates from sporadic cases of BSI. The isolates were collected from 27 patients at Chonnam National University Hospital (CUH) during a 6-year period and 22 patients at Asan Medical Center (AMC) during a 2-year period.

Results:

Based on the PFGE patterns, the average similarity value (SAB) for the 27 isolates from CUH was 0.84 ± 0.08, which was significantly higher than that for the 22 isolates from AMC (0.78 ± 0.06; P < .001). Of the 49 strains from patients at the 2 hospitals, 9 isolates were placed into 3 subtypes with SAB values of 1.0, which indicated that they were identical. All 9 of these strains were isolated from CUH patients, and each type strain was isolated sporadically during a period ranging from 4 months to 3 years. On comparison of the clinical characteristics of the patients of the 2 hospitals, the CUH strains were isolated more frequently from non-neutropenic patients and patients with central venous catheter–related fungemia; cases from CUH had a better outcome than those from AMC (P < .05).

Conclusions:

These data show that the clinical and epidemiologic characteristics of C. tropicalis fungemia may differ markedly among hospitals and that some cases of C. tropicalis fungemia may be caused by endemic strains within a hospital.

Type
Original Articles
Information
Infection Control & Hospital Epidemiology , Volume 25 , Issue 8 , August 2004 , pp. 634 - 640
Copyright
Copyright © The Society for Healthcare Epidemiology of America 2004

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