Laboratory Medicine ›› 2025, Vol. 40 ›› Issue (10): 1014-1018.DOI: 10.3969/j.issn.1673-8640.2025.10.015

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Distribution characteristics and drug resistance analysis of fungi isolated from clinical samples from 2019 to 2023 in Heilongjiang

CUI Lanying, GUO Dawen, YU Xiaochen, WANG Xi()   

  1. Department of Clinical Laboratorythe First Affiliated Hospital of Harbin Medical UniversityHarbin 150001,Heilongjiang, China
  • Received:2024-03-18 Revised:2024-07-19 Online:2025-10-30 Published:2025-11-07

Abstract:

Objective To analyze the distribution and drug resistance of clinical isolates of fungi in Heilongjiang from 2019 to 2023,and to provide references for infection prevention and control and treatment. Methods A total of 34 815 clinical isolates of yeast-like fungi from 42 general hospitals in Heilongjiang were collected from the National Fungal Disease Surveillance Network from 2019 to 2023. All the isolates were identified and subjected to in vitro drug susceptibility testing. The differences in isolation rates and drug resistance of yeast-like fungi in different types of samples were compared. Results Among the 34 815 yeast-like fungi,51.01% were isolated from the intensive care unit(ICU),and the isolation rate of yeast-like fungi in sputum samples was the highest(65.23%). Among the sterile body fluids,the isolation rates of yeast-like fungi in pus(42.92%)and blood(30.41%)were the top 2. Among the clinical isolates of Candida,Candida albicans was the most common(63.28%),followed by Candida glabrata(13.81%),Candida parapsilosis and Pichia kudriavzevii with isolation rates of 4.22% and 2.77%,respectively. The in vitro drug susceptibility test results showed that Candida glabrata was susceptible dose dependent(SDD)or resistant to fluconazole,and Pichia kudriavzevii was naturally resistant to fluconazole. The sensitivity rates of Candida albicans and Candida parapsilosis to fluconazole were relatively high(>80%),while the sensitivity rate of Candida tropicalis to fluconazole was only 65.8%. The 70.5% of Candida tropicalis isolates were wild-type to itraconazole,which was lower than that of Candida glabrata(89.3%),Candida parapsilosis(88.5%)and Pichia kudriavzevii(93.5%). The sensitivity rates of Candida albicans,Candida parapsilosis and Pichia kudriavzevii to voriconazole (>93%) were higher than that of Candida tropicalis(67.1%). All isolated Candida species were wild-type to amphotericin B. Conclusions The resistance rate of Candida tropicalis to azole drugs is relatively high in Heilongjiang. Itraconazole,voriconazole and amphotericin B have strong antibacterial activity against Candida species.

Key words: Fungus, Yeast-like fungus, Drug resistance, Clinical distribution, Heilongjiang

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