In this paper, a discrete epidemic model with nonlinear incidence rate obtained by the forward Euler method is investigated.
This paper addresses the effect of the choice of the incidence function for the occurrence of backward bifurcation in two malaria models, namely, malaria model with standard incidence rate and malaria model with nonlinear incidence rate.
Hu et al. [23] considered the same nonlinear incidence rate.
Theorem 4.2 Consider the nonlinear incidence function g.
(A5) A nonlinear incidence rate of the disease is included in the model.
For a nonlinear incidence (f(S,I)), we introduce the following assumption.
Li et al. [24] constructed an SIR epidemic model with nonlinear incidence and treatment.
In this paper, a class of discrete SEIRS epidemic models with general nonlinear incidence is investigated.
Therefore, it is interesting to investigate the nonlinear incidence rates and the latent period.
Recently, Yang and Yang [22] also suggested a nonlinear incidence rate.
For a more general nonlinear incidence rate, we refer the reader to Wang [35].
