Figure 4

Comparison of system (2) and system (3), \(u = 0.32\), \(\delta = 0.58\), \(\beta =0.3\), \(b=0.2\), \(q=0.26\), \(\varepsilon =0.32\), \({\alpha _{2}} = 0.12\), \({\alpha _{3}} = 0.23\), \(\gamma = 0.25\), \(m=0.01\), \(n=0.5\), \(A=0.72\), \(\sigma =0.21 \), where \({{ {R}}_{0}} = 1.3942>1 \), \(\widetilde{R}= 0.8141 < 1 \)