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查桥镇1970年基本消灭血吸虫病以来的21年,有13年查到钉螺,先后查出螺点75个,有螺面积为19822平方米。其中1971～1975年查到螺点54个,有螺面积为15039平方米;1976～1991年查到21个螺点,有螺面积为3883平方米。在无锡县1976年以来钉螺再现的24个乡镇中,残存钉螺分布的村(次)数和螺点数均为最,分布村占15.46%;螺点数占17.5%(见表)。从查桥镇残存钉螺螺点环境分布情况看:河道23个点,占30.67%;池塘8个点,占10.67%;沟渠31个点,占41.33%;水早田、桑田4个点,占5.33%;其他环境9个
Chaqiao town in 1970 basically eliminated schistosomiasis since 21 years, 13 snails found, has found 75 snail points, a snail area of 19822 square meters. Among them, from 1971 to 1975, 54 spiral points were found, with a spiral area of 15039 square meters; from 1976 to 1991, 21 spiral points were found, with a spiral area of 3883 square meters. Of the 24 townships and townships that snail reappeared in Wuxi County since 1976, the surviving snails distributed the most number of villages and spiral points, with distribution villages accounting for 15.46% and spiral points accounting for 17.5% (see table). From the investigation of the distribution of surviving snail snail spots in Chaqiao Town, 23 points of the river courses account for 30.67%, 8 points of ponds account for 10.67%, 31 ditches points for 41.33%, 4 points for wateriness and mulberry fields, accounting for 5.33% %; Other environment 9