关键词: 防治后期, 马来丝虫病, 传播动态

Abstract: To identify whether filariasis can be transmitted continually when microfilaria rate had been dropped to below 1% a longitudinal observation was conducted in Shuiwa village, Xiangfan City of Hubei province during 1982 - 1992.The main results are as fOlows:(1) Although no anti-filariasis measures were applied since 1982, no infected-newly cases of microfilaraemia found when annual blood examination was made during 1983 - 1992, and blood(18 medaraemia cases found in 1982 showed that negative conversion rate of microfilaria was100% 8 later.(2) Annul dissection of Anopheles sinensis were conducted during 1982 - 1986, and no infective stage'larvae were found since l984.The facts mentioned above indicated that transmission of filariasis could be interrppted automatically when microfilaria rate in population had dropped below 1%.