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Epidemiology of vulvovaginal candidiasis in China: a six-year retrospective single-center study from a tertiary obstetrics and gynecology hospital in Shanghai
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DOI：10.1128/spectrum.03251-25.png)
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Abstract
En 中文
Vulvovaginal candidiasis (VVC) represents a global health issue. However, epidemiological data on VVC in eastern China are scarce, limited, and outdated. To address this gap, we conducted a six-year retrospective study (2019-2024), investigating the epidemiological characteristics, species distribution, and antifungal susceptibility patterns of VVC patients in Shanghai, China. VVC was confirmed based on clinical symptoms combined with laboratory examination. Candida species were identified by MALDI-TOF MS, and in vitro antifungal susceptibility testing (AFST) was carried out using the ATB FUNGUS 3 method. The epidemiological changes over time were analyzed using the chi 2 test for trend. In total, 7,894 VVC episodes were identified among 7,167 individuals. Of these, 39 patients (0.54%) exhibited mixed Candida infections. Candida albicans was the predominant species (77.26%), followed by Candida glabrata (17.63%), Candida parapsilosis (1.53%), Candida tropicalis (1.17%), and Candida krusei (1.00%). Other species were rare, each accounting for less than 1.0%. VVC shows high prevalence in our region, with C. albicans as the most prevalent pathogen, followed by C. glabrata. And an increasing trend in C. glabrata VVC was observed, accompanied by consistently high rates of voriconazole resistance. Fluconazole resistance was observed in 18.82% of C. albicans with cross-resistance to other azoles. Thus, our findings highlight the significance of Candida species identification and accurate diagnosis in VVC, underscoring the necessity for targeted antifungal management.IMPORTANCEVulvovaginal candidiasis is a widespread condition among women, associated with significant emotional, physical, and economic burdens, and presents ongoing challenges in diagnosis and management. Our six-year Shanghai study reveals Candida species caused 9.66% of vaginitis cases, with C. albicans remaining predominant and showing alarming fluconazole resistance (18.82%). Particularly concerning is the rising trend of non-albicans Candida, especially C. glabrata. These findings critically emphasize the necessity of implementing routine species identification and continuous antifungal susceptibility testing in China to guide targeted therapy, curb resistance spread, and optimize VVC management strategies.
Keywords:
vulvovaginal candidiasis
epidemiology
Candida albicans
Candida glabrata
antifungal resistance
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