Fig. 3.

Italy: Time evolution of the populations of cumulative total infections, active infections, recoveries and deaths/1000. The input parameters used in the modelling are the following: $I\left(0\right)=1.3\times {10}^{-3},$$R\left(0\right)=6.21\times {10}^{-4},$$f=2.4\times {10}^5,$$a=0.18,$$b=0.037,$$D_0=3.6\times {10}^4$and $k_0=1.6\times {10}^{-5}$. We note that the red curves are those from the model solutions and the blue from the published data in [34].