讨论了带有饱和接触率和垂直传染的两病株病原体的共存性,获得了共存性存在的充要条件R_2(N_2~*)〈R_1(N_2~*),R_1(N_1~*)〈R_2(N_1~*),并且在共存平衡点存在的条件下证明得到其局部稳定.
By introducing saturating contact rates and vertical transmission,this paper deals with dynamical behaviors of a mathematical model with two-strain pathogen. Necessary and sufficient condition of the existence of coexistence equilibrium are obtained. If the coexistence equilibrium exists,it is locally asymptotically stable.