Figure 15

Dynamics of \(\pmb{I(t)}\) with \(\pmb{\gamma_{i} =1}\) (solid red line), \(\pmb{\gamma_{i} =0.95}\) (dashed blue line), \(\pmb{\gamma_{i} =0.9}\) (dotted green line) and \(\pmb{\gamma_{i} =0.85}\) (dotted dashed magenta line), \(\pmb{i=1,2,3}\) .