On the Dynamical Complexity of a Seasonally Forced Discrete SIR Epidemic Model with a Constant Vaccination Strategy

Figure 4

(a) 3D bifurcation diagram corresponding to the dynamical variables and , with the time step as the control parameter. (b) Dynamics of the variable , taking also as the bifurcation parameter. (c) Variation of the maximal Lyapunov exponent of the system (5) with . In all the previous situations and

(a)

(b)

(c)