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This study aimed to determine the prevalence of and risk factors associated with BV(bacterial vaginosis, BV), VVC (vulvovaginal candidiasis, VVC) and TV (trichomonal vaginitis, TV) among non-pregnant women. Among 770 women included in analyses, surveyed using a questionnaire and subsequently diagnosed with BV, VVC and TV via Gram staining and vaginal swab microscopy. Vaginal infections were prevalent in 31.30%, with BV being the most prevalent (21.35%). Single-variable analysis revealed that an age of 20–29 years (odds ratio [OR] = 2.31, 95% CI: 1.24–4.29; p =.007) and lack of education (OR = 0.50, 95% CI: 0.28-0.89; p =.018) were significantly associated with BV. However, an age of 30–39 years was significantly associated with VVC (OR = 2.12, 95% CI: 1.03–4.38; p =.038). Multivariable analysis confirmed that miscarriage was an independent predictor of BV and VVC. Miscarriage was significantly associated with the incidence of BV and VVC (OR = 1.680, 95% CI: 1.146–2.462; p =.011 and OR = 2.04, 95% CI: 1.30–3.20; p =.002, respectively). In conclusion, BV appears to be the predominant cause of vaginitis, risk factors for vaginitis include age and level of education and miscarriage. What is already known on this subject? Inflammation of the vagina, or vaginitis, is caused by various infectious and non-infectious factors. The most common causes of infectious vaginitis are BV, VVC and TV. Kunming located at the southwestern border of China, However, there is still no systematic research investigating the status of vaginitis infection in Yunnan Province. Therefore, the present study aimed to determine the prevalence of these vaginal infections; BV, VVC, and TV, among women of childbearing age, and to assess the prevalence of vaginal infections and the associated risk factors. What do the results of this study add? In our study we found that vaginal infections were prevalent in 31.30% of reproductive-age women, with BV being the most prevalent (21.35%). We believe that our study makes a significant contribution to the literature because we report that BV appears to be the predominant cause of vaginitis, followed by VVC and TV. Risk factors for vaginitis include age, miscarriage and level of education. What are the implications of these findings for clinical practice and/or further research? This study aimed to determine the prevalence of these vaginal infections, BV, VVC and TV, and to assess the prevalence of vaginal infections and the associated risk factors. Health education interventions are recommended to raise women's awareness of vaginitis and its prevention. [ABSTRACT FROM AUTHOR]