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铁路系统的卡介苗接种工作是由一九五○年第四季度开始的,当年因各地对卡介苗认识不太够,所以把重点工作放在大力的宣传上,同时并进行初步的重点接种,经过这一阶段取得了初步的经验后,一九五一年实行进一步的推广工作,以各铁路职工子弟小学为主要对象,次为在家儿童,共计施行了(尚有部分材料未到)结素试验88.910名,复验人数78.665名,其中(各年龄组平均)阳性反应者共45.682名,占58.07%阴性反应者32.983名,平均占41.93%接种卡介苗人数40.225名,变换率总平均为90.16%除5—9岁年龄组之变换率稍低外(82.4%)其它各年龄组均在96.65%左右。关于阳性反应曲线仍是依年龄的增长而升高,十五岁以上的
The BCG vaccination work of the railway system started in the fourth quarter of 1950, when the local knowledge of BCG was not enough. Therefore, the key work was put on vigorous publicity and the initial priority vaccination was carried out. After this After a preliminary experience has been achieved in stage I, a further promotion work was carried out in 1951. A pilot study was conducted for children at home (with some materials still missing) as the main target for primary schools for railway workers and their children 88.910 78.665 were retested, of which 45.682 were positive (average for all age groups), accounting for 58.9% (32.983%) with an average of 41.93% (40.225). The overall average conversion rate was 90.16% The conversion rate of -9-year-old group was slightly lower (82.4%) and the other age groups were all around 96.65%. The positive response curve is still rising with age, more than 15 years of age