Fig. 2.

Percolation correction as a function of the combined adherence to interventions ($W_{NPI}$). We plot the resultant curve for different values of $h_{steep}$, which is the steepness of the hyperbolic tangent in the definition of $f_{perc}$ (Eq. (2)). For low $W_{NPI}$, $f_{perc}\to 0$, meaning no connectivity is lost at low levels of adherence. Near $W_{NPI}=T_{perc}$, $f_{perc}$ increases rapidly. Under the high $W_{NPI}$ regime, where more connections are lost, $f_{perc}\to h_{eff}\approx 1$. Here we used $T_{perc}=0.6$ for the percolation threshold, which is indicated as the curve’s inflexion point. Note that changing the $T_{perc}$ value simply translates the curve along the $x$-axis.