Research Article

Analysis of an SEIR Epidemic Model with Saturated Incidence and Saturated Treatment Function

Figure 4

(a)–(d) show that system (7) has the bistable equilibria: a disease-free equilibrium and an endemic equilibrium . And the other endemic equilibrium is unstable. In this case, , , , , , , , , and .
910421.fig.004a
(a)
910421.fig.004b
(b)
910421.fig.004c
(c)
910421.fig.004d
(d)