Figure 2:
Case (a) shows the behavior of the infectious class if the value of the parameter
γ is changed and the other values of the parameters are the same as the values used in
Figure 1. In this scenario, for the green solution
while for the blue and yellow solutions the value of
γ is reduced and increased in 10%, respectively. Case (b) shows the behavior of the infectious class if the value of the parameter
ι is changed and the other values of the parameters are the same as the values used in
Figure 1. In this scenario, for the green solution
while for the red and cyan solutions the value of
is reduced 90% and 50%, respectively. Case (c) shows the behavior of the infectious class if the length of the period is changed. In this scenario, for the green solution the period is 365 days, for the yellow solution the period is 90 days, and for the blue solution the period is 183 days. Finally, Case (d) shows the infectious class if the infectious rate is changed. The green solution is obtained if
, the yellow solution is obtained if
β is increased in 10% and the blue solution is obtained if
β is decreased in 10%.