Fig. 20.

Explored the impact of altering the fractional-order $\alpha =1.0,0.95,0.9,0.85,0.8$ on the recovered (human) individuals. Subpanels $a\left(i\right),a\left(ii\right),a\left(iii\right)\text{,}$ and $a\left(iv\right)$ show the results under the quarantine cost and disease information probability $\left(C_q,\rho \right)=\left(0.1,0.1\right)\left(0.1,0.9\right),\left(0.9,0.1\right)$ and $\left(0.9,0.9\right)$, respectively, whereas the remaining parameter settings are ${\beta }_{hh}=1.0,{\beta }_{aa}=0.5,{\phi }_h={\phi }_a=0.0,{\alpha }_h={\alpha }_a=0.2,{\gamma }_h={\gamma }_a=0.1,\delta =0.04,\theta =0.0$.