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为了解健康人群脊髓灰质炎 (脊灰 )的抗体水平 ,河南省于 1998年在信阳、许昌、周口 3个地区分别对 2～ 4岁、5～ 8岁、12～ 15岁、2 1～ 3 9岁 4个年龄组共计 5 96人进行了脊灰中和抗体水平监测 ,结果表明 :脊灰Ⅰ、Ⅱ、Ⅲ型中和抗体阳性率分别为91 95 %、95 81%、92 2 8% ,Ⅰ、Ⅱ、Ⅲ型抗体几何平均滴度分别为 1∶49 2 1、1∶5 3 69、1∶2 8 62。 3个型抗体全阳性占 83 89% ,3个型抗体全阴性占 1 0 1% ,2个型抗体阴性占 1 85 % ,河南省健康人群已形成了对脊灰较好的免疫屏障
In order to understand the antibody level of polio (polio) in healthy population, Henan Province studied the antibody levels of polio (polio) in healthy population in three districts of Xunyang, Xuchang and Zhoukou in 1998 respectively. The results showed that the positive rates of neutralizing antibodies of type Ⅰ, type Ⅱ and type Ⅲ were 91 95%, 95 81% and 92 28% respectively, The geometric mean titers of type Ⅰ, Ⅱ and Ⅲ antibodies were 1:49 2, 1 1:5 3 69, 1:28 8 respectively. The positive rate of three types of antibodies was 83.89%, that of the three types of antibodies was 101%, while that of the two types of antibodies was 1-185%. The healthy population in Henan Province had a good immune barrier against polio