江苏省黑热病流行病学和免疫学的动态观察

自1958年来，江苏省对黑热病继续采取积极的防治措施，至1985年，全省共发生11例黑热病病人。为全面考核黑热病在江苏省的流行趋势．于1991和1996年两次对原黑热病流行区11个县市区56个村庄近万人进行了黑热病流行病学和免疫学观察。在1991年的调查中：未发现现患病人，未查见中华白蛉，人群LDT阳性率在0～9岁组最低，未有IFAT阳性者。在1996年的调查中：也未发现病人，0～9岁组没有LDT阳性者．未有IFAT阳性者。两次调查结果发现，各个年龄组LDT阳性情况与黑热病基本消灭地区（如山东）一致。可以认为，江苏省目前已无现患黑热病病人，中华白蛉密度极低，人群免疫状况与黑热病基本消灭地区相同。所以．江苏省黑热病防治效果巩固。

A Dynamic Investigation on Epidemiology and Immunology of Kala-azar Control in Jiangsu Province, China

In 1958. kalauazar (KA ) was basically eliminated in Jiangsu province. Because vigorous control measures were taken afterwords. only 11 KA patients were detected during 1973 -1985. For general evaluation of control measures of KA, an overall survey of a relatively largescale was conducted in 56 townships located in 11 counties of 4 prefectures and cities during 1991- 1992. The results showed that neither new KA patients were detected nor P. chinensis wasfound and in all age groups the positive rate of LDT (Leishmania Demal Test ) in age group of 0-9 was the lowest. In 1996. we carried out an immunologic test again in population who had beeninvestigated from l 99l - l 992, and no positive person of LDT and IFAT (Indirect Fluorescent Antibody Test ) was found in age group of 0 - 9. Through investigations from 1991 - 1992 and in1996, the immune status of population in 10 - 19, 20 - 29, 30- 39, 40- 49 and 50- age groupswas similar to those in the area where KA had been eliminated.