Mathematical Model of Three Age-Structured Transmission Dynamics of Chikungunya Virus

Figure 4

Backward bifurcation plot of the age-structured model (10) with the asymptomatic and symptomatic human compartments given in (29). (a) Asymptomatic juvenile; (b) symptomatic juvenile. (c) Asymptomatic adult; (d) symptomatic adult. (e) Asymptomatic senior; (f) symptomatic senior. Parameter values used are as given in Table 3.

(a)

(b)

(c)

(d)

(e)

(f)