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为选择新生儿卡介苗皮内接种的最佳时间,我市于1989年对全地区范围内新生儿随机抽取456名(农村和城市各228名),采用同批号同剂量卡介苗于不同时间接种,并于接种后12周观察阳转及卡痕情况。
In order to choose the optimal time for intradermal vaccination of neonatal BCG, 456 neonates (228 in rural and urban areas) were randomly selected from all over the region in 1989. At the same time, the same dose of BCG was inoculated at different times Twelve weeks after inoculation, observe the positive rotation and kicking marks.