Recursive contact tracing in Reed–Frost epidemic models

We introduce a Reed-Frost epidemic model with recursive contact tracing and asymptomatic transmission. This generalizes the branching-process introduced by authors in previous work [arxiv:2004.07237] to finite populations general networks. simulate numerically for two representative examples, complete graph square lattice. On both networks, we observe clear signatures of contact-tracing phase transition from an "epidemic phase" "immune as contact-network coverage is increased. verify that away singular line perfect tracing, finite-size scaling on each network lies corresponding percolation universality class. Finally, use quantify efficacy regimes where spread not contained.