[The interplay between schistosome and its snail host: a review].

As the only intermediate host of Schistosoma japonicum, the control of Oncomelania snails serves as a major part in schistosomiasis control. This review mainly demonstrates the following aspects: the invasion of schistosome miracidium into snails, the mechanism of resistance to miracidia, and the factors influencing this process. With a view to explore the methods of interrupting every phase during miracidium infection, this article focuses on the possibility for safeguarding human health through protecting snails, namely, achieving snails harmlessness.