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本文研究了脑膜炎双球菌易感儿童的免疫状态、有效预防接种法及其接种对象的年龄范围。取自采血前几周未接受免疫球蛋白或输血的健康儿童血清,分成两组。第一组:170份2～5岁儿童血清,分装后置于-20℃;第二组:从4个托儿所及1个家庭中收集的97份1～23月令健康儿童血清,冰冻保存。共检查了267份血清标本的 A 群脑膜炎双球菌多糖菌苗的抗体水平。除1～2月令的婴儿外(通过胎盘来自母体的抗体可持续到3个月),其余儿童至第8个月均未测出
This article studies the immunological status of susceptible children with meningococcus and effectively prevents vaccination and the age range in which they are vaccinated. Sera from healthy children who did not receive immunoglobulin or blood transfusions in the first few weeks of blood sampling were divided into two groups. The first group: 170 serums of children aged 2 to 5 years old were placed in -20 ° C after subpackaging. The second group consisted of 97 healthy children’s serum collected from 4 nurseries and 1 family and frozen from January to December . A total of 267 serum samples were examined for Group A meningococcal polysaccharide vaccine antibody levels. Except for infants from January to February (the maternal antibody that passed through the placenta lasts up to 3 months), the remaining children were not detected until the 8th month