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目的:探究已治愈新型冠状病毒肺炎(COVID-19)患者的病毒清除时间延迟相关因素。方法:以武汉协和医院2020年1—3月228例经核酸确诊的COVID-19病例为研究对象,根据病毒清除时间21 d为界,分为延迟清除组(136例)和对照组(92例),对比分析两组患者临床特征、发病至入院时间、实验室检查指标等。应用Logistic分析与COVID-19患者病毒清除时间延长风险相关的因素。采用Kaplan-Meier曲线描述不同IL-6水平、不同入院时间的病毒核酸阳性比例,使用log-rank检验比较延迟清除组和对照组病毒清除速度的差异。结果:所有病例总体病毒清除时间为23.00(18.00,30.25)d,两组常见临床症状为发热和咳嗽。病毒清除时间延迟的危险因素有发病至入院时间>10 d(n aOR=6.581, 95%n CI:3.505~12.354)和IL-6浓度>17.49 pg/mL(n aOR=2.766, 95%n CI:1.282~5.964)。Kaplan-Meier曲线显示,发病至入院时间>10 d以及病程中IL-6浓度>17.49 pg/mL的患者病毒清除速度更慢(log-rankn P10 days (n aOR=6.581, 95%n CI: 3.505-12.354) and IL-6>17.49 pg/mL (n aOR=2.766, 95%n CI: 1.282-5.964) . Kaplan-Meier curves showed that the hospital admission time >10 days and IL-6 >17.49 pg/mL had a slower viral clearance (log-rank n P<0.05 or 0.01) .n Conclusions:IL-6 and the time from onset to admission are associated with the duration of viral clearance in COVID-19 patients. It is necessary for the patients to be admitted to the hospital as soon as possible after symptoms appear, in order to eliminate the virus quickly.