Video S3 SIR epidemic on the EGP-immunized artificial social network. I. In this video, an SIR epidemic spreads through the artificial Jin-Girvan-Newman social network after EGP immunization. The EGP immunization is based on the 475node, 934-link network estimated over S = 100 SIR epidemics from the 1,000-node, 1,584-link network, using the algorithm described in the text, and a weight cutoff of w c = 7. Of the 934 estimated links, 738 are correct, giving an accuracy of 79.01%. The EGP procedure then identifies 67 separator nodes, and when these are removed, the immunized network has 1,359 links remaining.