近年来,人们对结核杆菌的易感性增加,使成人结核病呈上升趋势。为了预防结核病,最有效的措施是按照儿童计划免疫程序接种卡介苗,91年我院对7岁和12岁两年龄组的600名儿童做复种卡介苗前结核菌素试验,结果阳性率为30％,强阳性率为2％,于是只对420名结核菌菌素试验阴性的儿童接 In recent years, people’s susceptibility to Mycobacterium tuberculosis increased, adult tuberculosis is on the rise. In order to prevent tuberculosis, the most effective measure is to vaccinate BCG according to the planned immunization schedule of children. In our hospital, in 1991, the pre-BCG test of 600 children in both age groups of 7 and 12 years old showed a positive rate of 30% Strong positive rate of 2%, so only 420 tuberculin test negative children access