Figure 2From: A delayed SIR model with general nonlinear incidence rate Temporal behavior of the infective individuals and corresponding three-dimensional phase for system ( 22 ) with \(\pmb{\sigma_{0}=4.9505}\) and \(\pmb{I^{*}F'(S^{*})=0.0795<2r(1-2S^{*})=0.1198}\) . The initial value is set to be \((0.35, 0.3, 0.2)\) and \(\tau=2.5>\tau_{0}=2.0288\).Back to article page