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本文报告鄱阳湖血吸虫病中度疫区８年人群选择性化疗的效果。发现连续２年每年１次采用上述措施，可使人群血吸虫感染率迅速下降并稳定在３％以下。但由于人群再感染，中止化疗后２年，人群血吸虫感染率即迅速回升。并发现隔年１次与每年１次选择性化疗似有相同的防治效果。同时提出了此类疫区选择性化疗的最佳时间。
This article reports the effect of selective chemotherapy in moderate epidemic-affected areas of Poyang Lake schistosomiasis for 8 years. It was found that using the above measures once a year for 2 years in a row could rapidly reduce the population infection rate of schistosomiasis and keep it below 3%. However, due to re-infection of the population, 2 years after the suspension of chemotherapy, the population of schistosomiasis that the rapid recovery. And found once every year and 1 year selective chemotherapy seems to have the same control effect. At the same time, the best time for selective chemotherapy in such epidemic areas is proposed.