Fig. 4.

Comparison of the overall size of the epidemic $r_{\infty }$ for a fixed $\beta =0.0025$ in the $(\kappa ,w)$-parameter plane. a Simulations. b Mean-field analysis from the pair approximation. We also indicate the critical curve, as calculated from (6). Again $N=500,\mu =15,\gamma =0.025$, $\delta =0.01$ and ${\rho }_I(0)=0.01$