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计划免疫是根据对传染病的疫情监测和儿童人群免疫状况的分析,按照科学的免疫程序,有计划地利用疫苗进行预防接种,以提高儿童群体的免疫能力,达到控制以至最后消灭相应传染病的目的。我国每年的4月25日是“全国
Planned immunization is based on the analysis of epidemic situation of infectious diseases and the immune status of children in accordance with the scientific immunization program, the planned use of vaccines for vaccination in order to enhance the immune capacity of children groups, to control and eventually eliminate the corresponding infectious diseases purpose. April 25 of each year in our country is ”the whole country."