我县免疫工作由初期的盲目、应急、分片轮种逐渐转入免疫程序要求实施计划性免疫。应免儿童群体免疫水平提高,相对应的几种传染病发病率大幅度下降,效果十分明显。一、基础免疫率提高。1979～1983年五年累计“四苗”接种率达81.4%～94.2%,抽样调查18～30月龄儿童“四苗”覆盖率为57.8%。二、人群免疫水平升高。锡克氏试验阴转率92.7%,结素试验阳转率62.6%,脊髓 Immune work in our county from the initial blind, emergency, fragmented rotation gradually into the immune program requires the implementation of planned immunization. The immunization level of children should be avoided, and the corresponding incidence rate of several infectious diseases has dropped drastically. The effect is very obvious. First, the basic immune rate increased. During the five years from 1979 to 1983, the vaccination rate of “four seedlings” reached 81.4% ~ 94.2%. The coverage rate of “four seedlings” of children aged 18 ~ 30 months in the sample survey was 57.8%. Second, the population increased immunity. Sick’s test negative conversion rate of 92.7%, knot test positive rate of 62.6%, spinal cord