Abstract
Introduction
Candida species is the most common cause of invasive fungal infection. With the wide variation in species distribution and antifungal susceptibility of causative agents, local epidemiological profiles are needed to provide effective guidelines for the treatment of invasive candidiasis.
Objective
To find out the species distribution and antifungal susceptibilities of Candida strains isolated from patients in an intensive care unit (ICU) of Vietnam.
Methods
All patients in ICU of Vietnam National Hospital of Burn with Candida isolation reported from January 2017 to December 2019 were retrospectively studied. Species identification and antifungal susceptibility testing were performed using VITEK 2 Compact. The identification was reconfirmed by sequencing of the internal transcribed spacer regions when needed.
Results
A total of 186 yeasts belonging to ten species were collected. The most common agent was C. tropicalis (45.7%), followed by C. albicans (42.4%), and C. parapsilosis (7.53%). The isolated yeasts showed less susceptibility to fluconazole (resistant rate R 10.7%) than to micafungin, caspofungin, flucytosine and amphotericin B (R 0%, 0.6%, 2.3% and 3.4%, respectively, p < 0.05). C. albicans isolates were more susceptible to fluconazole (R 5.2%) than C. tropicalis (R 15.7%). Resistance to voriconazole was seen only among C. albicans (3.9%) and C. tropicalis isolates (9.9%).
Conclusion
Non-albicans species (especially C. tropicalis) is the predominant species, and there is a significant proportion of isolates with reduced susceptibility to azole but not to echinocandin.
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Data Availability
The datasets used and/or analyzed during the current study are available from the corresponding author upon reasonable request.
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CTS, CBL have contributed equally to this work and acted as joint first authors. CTS, CBL and TAL designed the study, analyzed, interpreted the data and drafted the manuscript. DXQ, NTNM and NNL collected clinical data. DNA, HXS, TAL and TTTH collected the microbiological data and identified species. DQ revised the manuscript critically. All authors read and approved the final manuscript.
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This research is part of thesis work for the fulfillment of Doctor of Literature and Philosophy in Health at National Institute of Malaria, Parasitology and Entomology of Vietnam.
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The study was approved by the Ethics Committee of Vietnam National Institute of Malariology, Parasitology and Entomology. Written patient consent was not required because of the observational nature of this study.
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Sinh, C.T., Loi, C.B., Minh, N.T.N. et al. Species Distribution and Antifungal Susceptibility Pattern of Candida Recovered from Intensive Care Unit Patients, Vietnam National Hospital of Burn (2017–2019). Mycopathologia 186, 543–551 (2021). https://doi.org/10.1007/s11046-021-00569-7
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DOI: https://doi.org/10.1007/s11046-021-00569-7