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1958年前,邹县居民微丝蚴阳性率高达22.2～30.6％。经全面防治阳性率显著下降。1974年基本消灭了丝虫病。经过继续防治至1980年丝虫感染率已稳定在0.01％左右,少数微丝蚴血症者分布在部分自然村内,以村为单位丝虫感染率为0.05～0.2％,微丝蚴密度1～5条/120μl者占90％,最多者17条/120μl。为了解这些残存的低密度微丝蚴血症者,在自然条件下对传播丝虫病的作用,1982～1985年选择尚有微丝蚴血症病人的大西苇村、东沙村、白庄一村、白庄二村的4个自然村为观察点,进行了此项调查研究。
Before 1958, Zouxian residents microfilaria positive rate as high as 22.2 ~ 30.6%. After a comprehensive prevention and control positive rate decreased significantly. In 1974 the basic elimination of filariasis. After continuing prevention and treatment until 1980, the infection rate of filariasis has been stabilized at about 0.01%. A few microfilariae are distributed in some villages. The infection rate of filariasis in villages is 0.05% -0.2% and the density of microfilariae is 1 ~ 5 / 120μl accounted for 90%, up to 17 / 120μl. To understand these remaining low-density microfilaremia who, in natural conditions on the transmission of filariasis role, 1982 to 1985, there are still microfilm in patients with microfilm Daxiwancun, Dongsha Village, Village, Baizhuang village of four villages as the observation point for the investigation.