Epidemiological investigation and analysis of a tuberculosis cluster epidemic in a school in Qiandongnan Prefecture
QIN Changyu1, LI Tao1, TANG Deliang1, XU Cheng1, YANG Quanjie1, CHEN Huaiyan1, MAO Qi2
1.Qiandongnan Center for Disease Control and Prevention, Carey 556000, Guizhou, China; 2.Songjiang District Center for Disease Control and Prevention of Shanghai City, Shanghai 201620, China
Abstract：Objective To analyze a tuberculosis cluster epidemic in a middle school in Qiandongnan Prefecture, and explore the causes of the epidemic, so as to provide reference for the scientific development of school tuberculosis prevention and control measures. Methods The epidemiological data and screening results of close contact with the tuberculosis cluster epidemic in a middle school in Qiandongnan Prefecture from March to May 2022 were collected. Descriptive epidemiological methods were used to analyze the epidemiological characteristics, screening results of close contact, and causes of the epidemic. Results A total of 2 293 students and teachers were screened; and 13 cases of pulmonary tuberculosis were reported among the students. All the cases were concentrated in Class 3, Grade 1 of senior high school. The attack rate of this class was 24.53%, and the distribution of cases showed the phenomenon of class and dormitory clustering. The strong positive rate of close contacts was 64.15%, higher than that of the general contacts (χ2=41.04, P<0.01). The index cases were symptomatic presentations, and the remaining cases were found by active screening, and none of them had symptoms related to tuberculosis. Conclusion The main reasons for the cluster epidemic are that the school did not carry out morning and noon examinations as required, the physical examination institution did not carry out the physical examination of new students in accordance with the national physical examination standards, the lack of knowledge of tuberculosis prevention and treatment among students, the sick students brought sick to class, and the use of air conditioning in the class also increased the risk of tuberculosis transmission.
覃常宇,李涛,唐德亮,徐成,杨全杰,陈怀艳,毛琦. 黔东南州一起学校结核病聚集性疫情的流行病学调查分析[J]. 中国校医, 2023, 37(8): 579-581,595.
QIN Changyu, LI Tao, TANG Deliang, XU Cheng, YANG Quanjie, CHEN Huaiyan, MAO Qi. Epidemiological investigation and analysis of a tuberculosis cluster epidemic in a school in Qiandongnan Prefecture. Chinese Journal of School Doctor, 2023, 37(8): 579-581,595.
2023, Vol. 37 
