摘要:
对西安市某高校一起肺结核聚集性疫情进行调查,为进一步规范疫情处置措施提供依据.方法 收集2016年10月西安市某高校一起肺结核疫情资料,探讨疫情扩散的原因.结果 疫情共发现肺结核病例17例,发病率为2.91%.确诊病例中有82.35%的病例是通过密切接触者筛查发现,且无任何临床症状.首发病例所在班发病10例,发病率为28.57%,病例数占全部确诊病例的58.82%,结核菌素强阳性率为77.14%,该班学生发病风险是其他班学生的31.43倍.首发病例所在宿舍发病5例,发病率为83.33%.首发病例所在班级和宿舍呈明显聚集性.结论 学校在出现首发病例后未对密切接触者及时开展结核菌素试验是造成疫情扩散的主要原因,疫情处置中要强化结核菌素筛查的重要性.
Abstract:
Objective To analyze an outbreak of tuberculosis (TB) in one college in Xi'an.Methods Information on the outbreak of TB in this college during October 2016 were collected.Epidemiological investigation was carried out to explore associated factors with the outbreak.Results About 2.91% of total students (17) were found infected with TB,among them 82.35% were detected through screening of close contacts with patients with no clinical symptoms.Ten of them (28.7%) came from the same class with positive rate of PPD test of 77.14%.The risk of TB infection in this class was 31.43 times higher than other classes.Five cases were found from the same dormitory of the first case,with the incidence rate of 83.33%.There are significant clustering characteristics in TB outbreak.Conclusion Close contacts with patients and no timely PPD test are the main reason for the outbreak in this college.PPD test should be strengthened and emphasized in the epidemic control of TB outbreak.
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