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北京市从 1991年以来已进行了 17轮脊髓灰质炎 (简称脊灰 )疫苗强化免疫活动。因为本地儿童计划免疫管理规范 ,免疫接种率持续保持高水平 ,而外来儿童因其特殊性 ,使计划免疫管理难度增大 ,漏管、漏种现象严重 ,所以根据卫生部关于开展 1999/ 2 0 0 0年强化免疫活动的要求 ,结
Beijing Municipality has carried out 17 rounds of poliovirus immunization campaigns since 1991. Because of the local child immunization program, the immunization rate continues to maintain a high level while that of migrant children is more difficult due to their special nature and makes it more difficult to plan immunization management. Therefore, according to the guidelines of the Ministry of Health on the implementation of 1999 / 0 0 years to strengthen the requirements of immunization activities, Results