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血吸虫病是严重危害人民健康的寄生虫病。云南籍的血吸虫病人于1924年便有发现,但直到1939年始证实有流行区存在。其病原体为日本血吸虫,中间宿主是水陆两栖的钉螺。云南的钉螺在外形、大小等方面与外省有肋壳的钉螺不尽相同,生态环境亦有差异。因此,究研钉螺在我省具体环境中的生态特点,对提高查螺、灭螺质量,因地制宜地制订防治规划,尽快控制和阻断血吸虫病流行,具有重要意义。为此,我们在三个县(市),5类环境中对钉螺的分布、扩散及消长情况进行了1-3年的系统观察。
Schistosomiasis is a parasitic disease that seriously affects people’s health. Yunnan schistosomiasis was found in 1924, but it was not confirmed until 1939 that endemic areas existed. The pathogen is Schistosoma japonicum, the intermediate host is amphibious snails. Yunnan snail in shape, size and other provinces with rib shell snail is not the same, there are differences in ecological environment. Therefore, it is of great significance to study the ecological characteristics of Oncomelania snails in the specific environment of our province. It is of great significance to improve the quality of snail and snail control, make prevention and control plans according to local conditions, and control and block the epidemic of schistosomiasis as soon as possible. For this reason, we systematically observed the distribution, spread and growth of snails in three counties (cities) and five types of environments for 1-3 years.