Special Session 4: Qualitative and Quantitative Features of Delay Differential Equations and Their Applications

Critical value in a SIR network model with heterogeneous infectiousness and susceptibility

Shuixian Yan
Gannan Normal University
Peoples Rep of China
Co-Author(s):    Sanling Yuan
Abstract:
Using the technique of edge-based compartmental modelling (EBCM) for the spread of susceptible-infected-recovered (SIR) diseases in networks, in a recent paper (PloS One, 8(2013), e69162), Miller and Volz established an SIR disease network model with heterogeneous infectiousness and susceptibility. In this talk, Using the nature of irreducible cooperative system in the theory of monotonic dynamical system, we prove that the dynamics of the model are completely determined by a critical value p0: When p0 > 0, the disease persists in a globally stable outbreak equilibrium; while when p0 < 0, the disease dies out in the population and the disease free equilibrium is globally stable.