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在洲岛型血吸虫病毒疫区，连续4年采用选择性化疗措施，以改良Kato法和超产检查考核其防治效果，结果显示，居民感染率从39．26％下降至28．60％，感染度（人群EPG算术均数）从59．70降至37．00；肝肿率、巨大肝肿率和脾肿率分别下降40．06％、93．94％和95．56％，肝纤维化患病率从31．16％下降至16．12％。提示在重疫区进行选择性化疗能有效地降低血吸虫病的患病率，但难以控制疾病的流行与传播。
In the island-type schistosomiasis epidemic area, selective chemotherapy was used for 4 years in a row, with improved Kato method and overproduction inspection to test its control effect. The results showed that the resident infection rate dropped from 39.26% to 28.60% (EPG arithmetic mean) decreased from 59.70 to 37.00. The rates of hepatomegaly, giant hepatomegaly and splenomegaly decreased by 40.06%, 93.94% and 95.56%, respectively. The incidence of hepatic fibrosis The prevalence dropped from 31.16% to 16.12%. It is suggested that selective chemotherapy in the endemic area can effectively reduce the prevalence of schistosomiasis, but it is difficult to control the spread and spread of the disease.