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国内测定结核自然感染及考核卡介苗接种后阳转率,常采用稀释1:2000倍旧结素5个单位皮内试验。由于旧结素混有培养基中的其他物质,成份不纯,可引起较多的非特异性反应。为此,我们采用PPDRT-23与OT,对皮内接种卡介苗后自身对照观察,以比较PPDRT-23与OT在人工感染后阳性反应存在多少差异,以评价旧结素在考核卡介苗免疫效果中的作用。一、试验与测量方法: 1.由本室专业人员二人,分别在每个学生双上肢前臂屈侧,皮内注射PPDRT-23 0.1毫升(2TU)
The domestic test tuberculosis natural infection and assessment of BCG vaccination positive rate, often used diluted 1: 2000 times the old knot 5 units intradermal test. As the old knot mixed with other substances in the medium, the composition of impure, can cause more non-specific reaction. To this end, we used PPDRT-23 and OT, after inoculation of intradermal BCG self-control observation to compare PPDRT-23 with OT in the positive reaction after artificial infection how much difference in order to evaluate the effect of nodules in the assessment of BCG immunization effect effect. First, the test and measurement methods: 1. Two professionals from the room, respectively, in each student’s upper limb forearm flexion, intradermal injection PPDRT-23 0.1 ml (2TU)