研究表明，血吸虫是血吸虫病的病原体，哺乳类动物(终末宿主)和钉螺(中间宿主)是血吸虫的两个宿主。
It has been demonstrated that Schistosome is pathogen of schistosomiasis, and the mammalian animal (the end host) and snails (the intermediate host) are their two hosts.
全县发现福建拟钉螺和放逸短沟蜷两种螺蛳，只有前者为斯氏狸殖吸虫和泡囊狸殖吸虫的第一中间宿主，其感染率为0 7% （4/ 5 6 9）。
Two species of snails, namely, Tricula fujiansis and Semisulcospira libertina were found, but only the former was the first intermediate host. The infection rate of snails was 0.7%(4/569).
钉螺作为血吸虫惟一的中间宿主，是血吸虫病传播的主要环节。
Oncomelania hupensis gredler is the only in-between lodging host of schistosome and plays a vital role in schistosomiasis spread.
结果证实其第一中间宿主为拟钉螺属的几种拟钉螺；第二中间宿主是景洪溪蟹和毛足溪蟹；
The results confirm the first intermediate hosts are several species of Tricula, and the second intermediate hosts are Potamon chinghungense and P. hispidum.
结果证实其第一中间宿主为拟钉螺属的几种拟钉螺；第二中间宿主是景洪溪蟹和毛足溪蟹；
The results confirm the first intermediate hosts are several species of Tricula, and the second intermediate hosts are Potamon chinghungense and P. hispidum.
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