【摘要】 在洞庭湖血吸虫病严重流行区，１９８７年以来采用大范围人畜化疗，到化疗第三年本地居民血吸虫病平均感染率从１７．２％下降到６．５％，下降率为６２．２％；到化疗第七年，在第三年的基础上继续下降３２．３％，居民平均感染率为４．４％。其中以洪道区１５个观察点疫情较轻，从化疗第三年起居民血吸虫病平均感染率即可稳定在５％以下。更多还原

【Abstract】 Since 1987 a large scale chemotherapy campaign in humen and domestic animals has been carried out for schistosomiasis control in Dongting Lake region,The results of 30 chemotherapy pilots showed that the infection rate of schistosomiasis of residents decreased from 17.2%in 1987 to 6.5%in 1989 and the decending rate was 62.2%,The infection rate decreased to 4.4%in 1993 and the decending rate was 32.3%compared with that of 1989.The endemicity was lighter in flood channel areas and the infection rateof schistosomiasis of residents was below 5.0% persistently from the third year after chemotherapy.更多还原