白喉是严重危害儿童健康的急性传染病。据调查,我县百白破混合制剂全程接种率极低,但自1966年以来却无白喉病例报告。为了解我县城乡青少年儿童对白喉的免疫状况,预测白喉流行的可能性,并为制订预防接种计划提供依据,我们于1981年4～5月,对城乡3,155名中小学生及托幼儿童进行了白喉锡克氏试验,现将结果报告如下。观察对象和方法一、观察对象:按照随机化的原则,选择远离县城20～40公里,不同方向、不同地域的五个公社中小学,与城区两所中学、两所小学作为锡克氏试验调查点。并按分层机械抽样原则,在每个调查点的中小学中,抽取每个年级一、二班的1、2小组,年龄从7～18岁,并适当注意年龄与性别等因素的 Diphtheria is an acute infectious disease that seriously affects the health of children. According to the survey, our county Baibu broken mixture throughout the entire vaccination rate is very low, but since 1966 there is no report of diphtheria. In order to understand the immunodeficiency status of diphtheria in urban and rural areas of our county and to predict the prevalence of diphtheria and to provide a basis for formulating vaccination programs, we conducted 3,155 primary and secondary school children and nurseries in urban and rural areas from April to May 1981 Diphtheria Sick’s test, the results are reported below. Observation objects and methods 1.Objectives: In accordance with the principle of randomization, five commune primary and secondary schools, 20-40 km away from the county seat, in different directions and in different regions, and two secondary schools in the urban area were selected as Skeletal test point. According to the principle of stratified mechanical sampling, one or two classes 1 and 2 of each grade were selected from primary and secondary schools at each survey point, ranging from 7 to 18 years old with due attention to factors such as age and gender