Multistage onset of epidemics in heterogeneous networks.

  title={Multistage onset of epidemics in heterogeneous networks.},
  author={Chao-Ran Cai and Zhi-Xi Wu and Petter Holme},
  journal={Physical review. E},
  volume={103 3-1},
We develop a theory for the susceptible-infected-susceptible (SIS) epidemic model on networks that incorporate both network structure and dynamic correlations. This theory can account for the multistage onset of the epidemic phase in scale-free networks. This phenomenon is characterized by multiple peaks in the susceptibility as a function of the infection rate. It can be explained by that, even under the global epidemic threshold, a hub can sustain the epidemics for an extended period… 
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