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为了解健康人群百日咳、白喉、破伤风的免疫水平，１９９８年４～５月对部分健康人群的百日咳、白喉和破伤风免疫水平进行调查，现分析如下。１ 材料来源 按省卫生防疫站免疫监测方案，选择２～４、６～８、１３～１５、２５～３９岁的健康人群作为调查对象，每组５０～６０
In order to understand the level of pertussis, diphtheria and tetanus in healthy people, the levels of pertussis, diphtheria and tetanus in some healthy people from April to May in 1998 were analyzed as follows. 1 Source of material According to the provincial health and epidemic prevention station immunization monitoring program, select 2 ~ 4,6 ~ 8,13 ~ 15,25 ~ 39-year-old healthy population as the survey object, each group of 50 ~ 60