黑热病是严重危害人民缝康的慢性传染病。解放前,我国华东、华北及西北地区均有黑热病流行,每年发病者甚多。根据文献记载,早在五十多年前密云县就曾出现过黑热病患者。解放后,在党和人民政府的关怀下,大力开发黑热病的防治工作,取得了很大成绩,至1958年以后已基本控制了黑热病的流行。但在十年浩劫期间,黑热病的发病率又有 Kala-azar is a chronic infectious disease that seriously affects people’s health. Before the liberation, there were epidemic of kala-azar in East China, North China and Northwest China, and there were many cases of morbidity each year. According to the literature, there were kala-azar patients in Miyun County more than 50 years ago. After the liberation, with the care of the party and the people’s government, efforts have been made to vigorously develop the prevention and treatment of kala-azar and great achievements have been made. By 1958, the prevalence of kala-azar has been basically controlled. However, during the Devastation, the incidence of kala-azar was again