Fig. 2.

Time evolution of A(t),  I(t) and R(t), where ${\beta }_1=0.25,{\beta }_2=0.3,\alpha =0.3,\tau =14$, and $m=0.9$. In the top panels, ${\gamma }_1=0$ and ${\gamma }_2=0.1$, and in the bottom panels, ${\gamma }_1=0.1$ and ${\gamma }_2=0.1$. a, e Measure 1 is taken immediately at $t=0$; b, f Measures 1 and 2 are taken from $t=0$; c, g Measure 1 comes into force at $t=20$; d, h two measures come into force at $t=20$. We set that nodes with degree of over 10 are hub nodes. The pink solid line, blue dotted-dashed line and green dashed line represent the fraction of asymptomatically infected, symptomatically infected and removed individuals, respectively