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[目的]了解广西边境地区7岁以下儿童对脊髓灰质炎的免疫水平。[方法]采取多阶段随机抽样方法从广西8个边境县区常住人口中抽取7岁以下儿童221名,采集血清标本,检测脊髓灰质炎中和抗体。[结果]Ⅰ、Ⅱ、Ⅲ型脊髓灰质炎中和抗体阳性率分别是97.28%、99.09%和97.74%;Ⅰ、Ⅱ、Ⅲ型脊髓灰质炎中和抗体几何平均滴度(GMT)分别为1︰103.09、1︰103.73、1︰27.96。[结论]广西边境县区7岁以下儿童脊髓灰质炎免疫水平良好,对脊髓灰质炎形成了巩固的免疫屏障。
[Objective] To understand the immunization against poliomyelitis in children under 7 years old in Guangxi border area. [Methods] A total of 221 children under 7 years of age were sampled from the resident population in 8 border counties of Guangxi by multi-stage random sampling method. Serum samples were collected for the detection of neutralizing antibodies against poliomyelitis. [Results] The positive rates of neutralizing antibodies against type I, II and III polio were 97.28%, 99.09% and 97.74%, respectively. The geometric mean titers of neutralizing antibodies against type I, II and III polio were 1 : 103.09,1: 103.73,1: 27.96. [Conclusion] The polio immunity of children below the age of 7 in border areas of Guangxi is good and forms a solid immune barrier to poliomyelitis.