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石门县地处湘西北,是山丘沟港型血吸虫病疫区,流行区主要在东南部10个乡、67个村,疫区人口191 172人。1956年普查有螺面积1049 618m~2,粪检3644人,阳性886人,阳性率为24.31%;1957～1970年共发现有螺面积2035 296m~2,累计有螺3 084 912m~2,粪检141 320人,阳性5633人,阳性率3.9%。1970年宣布基本消灭后,至1983年5月查出残存螺点286处,钉螺面积426 240m~2,其中新发
Shimen County is located in the northwestern part of Hunan Province. It is a foothill area of schistosomiasis in Shanqiu Gully. The endemic areas are mainly in 10 townships and 67 villages in the southeastern part of the country. The population of the affected area is 191,172. 1956 Census has a spiral area of 1049 618m ~ 2, fecal examination 3644 people, 886 were positive, the positive rate was 24.31%; 1957 to 1970 were found in a total area of 2035296m ~ 2, a total of 3 084 912m 2, Check 141 320 people, positive 5633 people, the positive rate of 3.9%. After announcing the basic elimination in 1970, it was found out in May 1983 that there were 286 remaining snail spots with an area of 426 240 m ~ 2,