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目的 掌握湖南省不同类型疫区血吸虫病的疫情动态。方法 试点纵向观察 6类疫区血吸虫病病情与钉螺变化。结果 1997- 2 0 0 0年 ,人群血检与粪检阳性率分别徘徊在 17.4% - 2 1.1%和 8.6 % - 7.6 %之间。山丘型血检阳性率从 1998年的 7.3%下降到 2 0 0 0年的 1.9% ,粪检阳性率从1999年的 0 .6 %下降到 2 0 0 0年的 0 ;其它类型粪检阳性率下降无统计学意义。耕牛阳性率在 11.3%- 9.6 %之间波动。山丘型阳性螺密度从 1997年的 0 .0 0 2 6只 /框下降到 1998年的 0 ;垸内型无阳性钉螺 ,城市型阳性螺密度在 0 .0 0 42只 /框以上 ;其它类型阳性螺密度均在 0 .0 0 2 5只 /框以上。结论 目前湖南省山丘型血吸虫病的疫情呈下降态势 ,湖区的血吸虫病疫情呈上升或徘徊状态。
Objective To understand the epidemic situation of schistosomiasis in different types of endemic areas in Hunan Province. Methods The pilot was used to observe the changes of schistosomiasis and snail in six kinds of epidemic areas longitudinally. Results Between 1997 and 2000, the positive rates of blood tests and stool tests in the population hovered between 17.4% and 21.1% and between 8.6% and 7.6%, respectively. The positive rate of hill-type blood tests dropped from 7.3% in 1998 to 1.9% in 2000, and the positive rate of droppings dropped from 0.6% in 1999 to 0 in 2000. Other types of excrement tests The positive rate decreased not statistically significant. Cattle positive rate fluctuated between 11.3% and 9.6%. The positive spiral density of hilltop decreased from 0 .0 0 2 6 / box in 1997 to 0 in 1998; no positive snail was found in the embankment, and the positive density of urban type was above 0.0002 / box; the other Type of positive spiral density were 0. 0 0 2 5 / box above. Conclusion At present, the epidemic situation of hill-type schistosomiasis in Hunan Province is declining. The epidemic situation of schistosomiasis in the lake area is rising or wandering.