１概况 金山区位于上海市远郊，５４万多人，属平原水网型地区，历史上有１４个乡（镇）流行血吸虫病，累计有螺面积１１００多万 ｍ２、血吸虫病人 １３． ５万多人，其中晚期血吸虫病人（以下简称晚血） ４０００多人，是血吸虫病重流行区。经过３０多年的综合防治．１９８３ 1 Overview Jinshan District is located in the outer suburbs of Shanghai, with more than 540,000 people. It belongs to the plain water network area. There are 14 township (town) epidemic schistosomiasis in history, with an accumulated area of ​​11 million m2 and schistosomiasis 13. More than 50,000 people, including advanced schistosomiasis patients (hereinafter referred to as late blood) more than 4,000 people, is a popular area schistosomiasis. After more than 30 years of comprehensive prevention and treatment. 1983