白喉在我区从1982年至今已无发病,(1971——1981年发病率仅波动在0.42——0.02/十万之间),1976年曾在我区进行过白喉免疫水平调查,锡克氏试验阳性率达39.59%。为了解我区近年来正常人群白喉免疫水平,合理评价我区灭病成绩及预防接种效果,以便为今后制定合理的免疫规划, Diphtheria in our area from 1982 to date no incidence, (incidence of fluctuations in 1971 - 1981 only fluctuated between 0.42--0.02 / 100,000), in 1976 in our area had conducted a diphtheria immune level survey, Sick’s Test positive rate of 39.59%. In order to understand the level of white-throat immunity in normal population in our district in recent years and to rationally evaluate the results of culling and preventive vaccination in our district so as to formulate a reasonable immunization plan for the future,