Effect of the overlapping fraction in the SIR epidemic threshold on individual layers.

<p>Fraction of recovered individuals vs the transmissibility in the steady state of the SIR model. The values were obtained theoretically from Eq. (4) for two Erdös-Rényi layers with , and different overlapping fraction values. In orange circles , in green squares , in blue triangles and in violet diamonds . In the upper panel we plot and in the bottom panel we plot . The arrows indicate the threshold and are used as a guide to show that is the same for and . The black full lines denote (up) and (down) when both networks are isolated and .