Fig. 1.

Time evolution of A(t),  I(t) and R(t), where ${\beta }_1=0.25,{\beta }_2=0.3,\alpha =0.3,\tau =14,m=0.9$. The pink solid line, blue dotted-dashed line and green dashed line represent the fraction of asymptomatically infected, symptomatically infected and removed individuals, respectively