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为了解即墨市儿童百日咳免疫水平,于1996年7月将即墨市计划免疫工作分为好、中、差三层,每层抽取一处乡镇的2个村庄,随机选择0～9岁儿童111名为调查对象.采每名调查对象耳垂血 0.3ml,分离血清后-20℃冻存备检.按卫生部颁布的《计划免疫技术管理规程》中规定的试管凝集试验,测定百日咳抗体.以凝集效价1:320为具有保护水平.调查结果.111名儿童中,具有保护水平者82人,保护率73.87%.几何平均滴度(GMT)331.4.不同年龄百日咳抗体保护率以2～岁组最高.为85.71%,0～岁组最低.为69,57%,随年龄增长,其抗体保护率逐渐增高,但各组
In order to understand the immunity level of whooping cough in Jimo children, in July 1996, the planned immunization work in Jimo was divided into three levels: good, medium and poor. Two villages in each township were selected on each floor and 111 children aged 0-9 were randomly selected As the investigation object.Each survey object earlobe blood 0.3ml, after separation of serum -20 ℃ cryopreservation.According to the Ministry of Health promulgated the “Immunization Technology Management Regulations” set forth in the tube agglutination test to determine whooping cough antibodies to agglutination The titer of 1: 320 was the level of protection.Results Of the 111 children, 82 had the protection level, the protection rate was 73.87%, the geometric mean titer (GMT) was 331.4. The protection rate of pertussis antibody of different ages was in the range of 2 ~ The highest was 85.71%, the lowest in 0 ~ group was 69,57%, with the increase of age, the antibody protection rate gradually increased, but each group