结核聚集性疫情中的传播关系分析

Transmission of tuberculosis in an outbreak

目的通过一起军校结核疫情传播关系的分析,探索结核在密集人群中的传播特点。方法所有病例进行流行病学调查,绘制传播关系图。结果本次疫情中共有44人发病,其中32人(72.73%)在确诊前有过不适症状,12人(27.27%)无明显不适。首发病例被误诊为肺炎后4个月才进行隔离治疗,后续病例中有23人(53.49%)与首发病例存在直接接触史,8人(19.60%)与其存在间接接触史,12人(27.91%)与其无接触史。结论误诊是导致本次疫情的主要原因,密切接触是主要传播途径。

Objective To analyze the transmission characteristics of tuberculosis（ TB） in an outbreak in a military academy and provide evidence for prevention and control of TB outbreak. Methods Epidemiology investigation was conducted for all the TB cases to understand the transmission route. Results A total of 44 cases occurred,in which 32（ 72. 73%） had symptoms and 12（ 27. 27%） had no obvious discomfort before diagnosis. The first case was not isolated for 4 months due to the misdiagnosis of pneumonia. Twenty three cases（ 53. 49%） had direct contacts,8 cases（ 19. 60%） had indirect contacts,12 cases（ 27. 91%） had no contacts with the first case. Conclusion Misdiagnosis was responsible for the TB outbreak,and close contact was the main transmission route.