Fig. 4.

Plots as functions of ${\mathcal{R}}_0^W$ (Winnipeg) and ${\mathcal{R}}_0^1$ (Portage la Prairie). a Value of the general ${\mathcal{R}}_0$; the green and red curves show the location of ${\mathcal{R}}_0=1$ and $1.5$, respectively. b Overall attack rate; the green and red curves are 5 and 30 %, respectively