本县推行BCG计划免疫工作以来,接种率逐年提高。但单纯以接种率的高低评价效果是不全面的。有的儿童由于未在初始月龄未及时接种而患病。为此,我们 Since the implementation of BCG immunization in this county, the vaccination rate has been increasing year by year. But simply to assess the level of inoculation rate is not comprehensive. Some children are not sick because of not being vaccinated at the initial age. For this, we