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靖西县是岩溶地形的石山区,地下河道纵横,环境复杂,适于钉螺生长繁殖。1958～1972年发现有螺面积3532897平方米,分布在13个公社54个大队;1958年统计钉螺平均密度1.25只/平方市尺,最高密度194只/平方尺,是广西血吸虫病重流行区之一。1958年以来,反复采取铲埋、开新填旧、火烧和药杀等灭螺措施,钉螺面积大大缩小,到1973年仅5685平方米,相当于原有的0.16％。但从1974年到1980年,年年都查到残存钉螺。现将1975～1980年发现的资料较完整的41个残存螺点(以下称螺点)分析如下:
Jingxi County is a karst rocky terrain, vertical and horizontal underground rivers, the environment is complex, suitable for snail growth and reproduction. From 1958 to 1972 found that snail area of 3532897 square meters, distributed in 13 communes 54 brigades; 1958 statistics snail average density of 1.25 / sq ft, the highest density of 194 / sq ft, is a serious endemic area of schistosomiasis Guangxi one. Since 1958, the area of snails has been greatly reduced by repeated measures such as shoveling, re-filling the old, burning fire and killing drugs. By 1973, the area was only 5,685 square meters, equivalent to 0.16% of the original. However, from 1974 to 1980, surviving snails were found every year. Now we find the 41 surviving spiral points (hereinafter referred to as spiral points), which are more complete than the ones found in 1975-1980, as follows: