Abstract：Objective To understand the status of tuberculosis infection among middle school students in Changsha City, and to provide references for developing targeted screening strategies. Methods Three middle schools in the urban area of Changsha City were selected to screen tuberculosis infection of freshmen enrolled in the first year of junior high school, the first year of senior high school and the third year of senior high school. The investigative subjects were screened for suspicious symptoms of pulmonary tuberculosis, history of tuberculosis and tuberculin skin test, and the students with strong positive reaction to tuberculin skin test were subjected to chest X-ray examination. The status of tuberculosis infection in different groups of students was statistically described. The infection rate was analyzed by Chi-square test, and the age distribution trend of tuberculosis infection by Chi-square test for trend. Results A total of 3,557 middle school students were screened, and 204 students were diagnosed with tuberculosis infection by tuberculin skin test. The overall infection rate was 5.74%, of which the infection rate was 5.64% (102/1,808) in males and 5.83% (102/1,749) in females, without statistically significant difference (χ2=0.060, P=0.807). The infection rates of students aged 11, 12, 13, 14, 15, 16, 17 and 18 years were 0.0%, 3.19%, 3.57%, 4.15%, 4.30%, 8.56%, 9.04% and 9.38%, respectively. The trend that the infection rates of age groups increased with age was statistically significant (χ2trend=32.954, P<0.001). The infection rates of the three schools surveyed were 7.70% (62/805), 5.15% (44/854) and 5.16% (96/1,898), respectively. There was a statistically significant difference in the infection rate among the schools (χ2=7.444, P=0.024). The infection rates of students with and without tuberculosis history were 7.27 % (4/55) and 5.71% (200/3,502), respectively, and no statistically significant difference was found between the two groups (χ2=0.244, P=0.621).The infection rates in patients without pulmonary tuberculosis symptoms, patients with cough and expectoration for less than 2weeks and patients with cough and expectoration for 2 weeks or more were 5.69% (200/3,513), 8.33% (3/36), and 12.50% (1/8), respectively, and no statistically significant difference was found in the infection rates among the three groups (χ2=1.138, P=0.566). Conclusion The overall infection rate of Mycobacterium tuberculosis among the middle school students in Changsha City was 5.74%. The infection rate of tuberculosis is positively correlated with age. The older the age, the higher theinfection rate.
肖涛, 王巧智, 徐祖辉, 明辉, 刘礼亲, 张娟. 长沙市城区中学生结核病筛查感染情况分析[J]. 实用预防医学, 2022, 29(11): 1295-1298.
XIAO Tao, WANG Qiao-zhi, XU Zu-hui, MING Hui, LIU Li-qing, ZHANG Juan. Screening of tuberculosis infection among urban middle school students in Changsha City. , 2022, 29(11): 1295-1298.
2022, Vol. 29 
