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为科学地评价我币脊髓灰质炎（脊灰）防治效果．我们于1989～1995年根据计划免疫质量分层随机抽样，技卫生部《计划免疫技术管理规程｝）中微量中和试验，对wtZ岁、2～岁、5～岁、8～岁、11～岁、15～岁和ZO～岁7个年龄组人群进行I脊灰中和抗体检测，以＞1：4为阳性。现将结果
To scientifically evaluate my coin polio (polio) control effect. We carried out the micro neutralization test from 1989 to 1995 according to the planned immunization quality stratified random sampling and the Ministry of Public Health’s "Planned Immunization Technical Management Procedures} I, 15-year-old and ZO ~ 7-year-old population I polio neutralization antibody test,> 1: 4 as the positive. Now the result