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随着改革开放和经济建设的发展，农村人口不断涌进城里，给儿童训划免疫管理工作带来了一定的困难。流动儿童的“四苗”覆盖问题突出地摆在地段医生面前、本交通过调查资料就此进行初步分析。1资料与方法一重居民委，从1994年6月至1994年12月，以户为单位，逐户逐人登记。2结果
With the development of reform and opening up and economic construction, the rural population is pouring into the city continuously, which brings some difficulties to the child immunization management. Floating children’s “four seedlings” coverage issues placed in front of the lot of doctors in front of the traffic investigation data to conduct a preliminary analysis. 1 Materials and Methods One Resident Committee, from June 1994 to December 1994, as a unit, one by one by household registration. 2 results