学校结核病疫情预警、控制研究

The Investigation on Forecasting and Controling of M.tuberculosis in Middle School

目的为探讨中学生被结核菌感染程度与病间的关系,建立有效的中学结核病疫情预警、控制办法。方法通过现场流行病学调查、以PPD试验检测学生被感染程度、经X/CT检查、痰检确诊肺结核病人,分析学生感染度与确诊病例数相关性。结果无确诊病例组学生PPD试验强阳性率为3.4%;确诊病例组学生PPD试验强阳性率为14.65%。确诊病例数与该班学生PPD试验强阳性率存在显著性相关性,相关系数r=0.994(N=4,N-2=2,1r1>0.990即在a=0.01水平上显著)。结论学校班级PPD强阳性率的高底预示该班级出现临床结核病例几率的大小。

Objective To understand the relationship between the level of infection by M. tuberculosis and bing ill in middle school students and found methods for forecasting and controling in middle school. Methods Eqidemical inestigating, testing the level of tb infection by PPD - test in middle school students , diagnosing the TB - patient by chest X - ray or CT scanning and sputum ; Analyging the degree of relationship between the level of infection and the number of TB patients. Results The rate of strong positive reaction was 3.4% in middle school students without the TB - patient and was 14. 65% with the TB patients. There was the significance correlation coefficient between the number of TB patient and the rate of strong positive reaction in the middle school students with TB patients. The coefficient of prodact - moment correlation （r） is 0. 994 （ N = 4, N - 2 = 2, 1 rl 〉 0. 990） Conclusion The frequency of TB patients diagnosed in a middle school varys with the rate of strong positive reaction of the same students.