中文摘要：

主要介绍血吸虫病在多个染病者群体传播的S-DI模型,对于两种不同的发生率产生不同的模型,分别求出其平衡点及疾病爆发的阈值,并且分别判断出无病平衡点和地方病平衡点的局部稳定性,并进行了数值模拟。

英文摘要：

This article mainly introduces the S-DI model of schistosomiasis spread in the multiple infected population. For two kinds of different incidence of different models, we find out the equilibria and threshold of disease outbreaks. The local stability of the disease-free equilibrium and the endemic equilibrium are determined in theory and by numerical simulations respectively.