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实践证明,山丘地区是可以消灭钉螺的,但查螺灭螺质量不高,监测及巩固措施不力,残螺亦易回升。丰城、高安两县1977年基本消灭血吸虫病时,残螺面积仅为17035m~2,而3年后残螺面积回升13倍,钉螺密度回升5倍多。现就其残存的主要原因及治疗对策进行探讨。一、钉螺残存的主要原因 1.查螺质量不高:查与未查无客观标准,或查而不全。如查螺时主观认为某地域有螺或无螺,面忽视了全面查螺和扩大范围查螺,这样就遗留残螺点。而残螺点遗留时间越长,面积越大,钉螺密度亦越高。 2.灭螺质量不高:一是开新埋旧灭螺时,新
Practice has proved that hill areas can eliminate snails, but snail snail quality is not high, monitoring and consolidation measures ineffective, snail is also easy to pick up. In Fengcheng and Gao’an counties, when the schistosomiasis was basically eliminated in 1977, the residual snail area was only 17035m ~ 2, while the residual snail area rose 13 times after 3 years, and the snail density rose more than 5 times. Now the main reason for its remnants and treatment strategies to explore. First, snails remain the main reason 1. Snail quality is not high: check and did not check the objective criteria, or check incomplete. Such as check when the subjective that a certain area of the snail or non-snail, surface neglected a comprehensive snail and expand the scope of Snail, so left residual snail point. The residual remnants of the longer the time left, the greater the area, the higher the density of snails. 2 snail quality is not high: First, open a new buried snail, the new