我们对城关地区部分学龄儿童接种卡介苗的情况进行细致的调查，结果发现有３０％左右儿童无卡痕，现报道如下。１ 资料与方法１．１ １９９５年４月，我们选定城关地区４所小学的７岁组儿童为调查对象，进行查看计划免疫接种证，观察接种部位的卡痕，追查原接种单位登记底册相 We conducted a detailed survey on the situation of BCG vaccination of some school-age children in the Chengguan area and found that about 30% of the children had no card marks. The report is as follows. 1 Materials and Methods 1.1 In April 1995, we selected 7-year-old children in 4 primary schools in the Chengguan area as the survey subjects to inspect the planned vaccination certificates, observe the marks on the inoculation sites and trace the original vaccination unit registration booklet phase