Volume 72, Number 2, October 2005
|Page(s)||315 - 321|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||07 September 2005|
Epidemic spreading in community networks
Department of Physics, East China Normal University - Shanghai 200062, PRC
2 Department of Physics, Center for Nonlinear Studies, and the Beijing-Hong Kong-Singapore Joint Center for Nonlinear and Complex Systems (Hong Kong Branch) Hong Kong Baptist University, Hong Kong, PRC
3 Department of Physics, University of Houston - Houston, TX 77204-5005, USA
Accepted: 5 August 2005
Social networks have the structure of communities. To understand how the community structure affects epidemic spreading, we present a simplified model of community network, and investigate the epidemic propagation in this model. We find that, compared to the random network, the community network has a broader degree distribution, a smaller threshold of epidemic outbreak, and more prevalence to keep the outbreak endemic. The formulae of epidemic threshold are given and confirmed by numerical simulations.
PACS: 89.75.Hc – Networks and genealogical trees / 87.23.Ge – Dynamics of social systems
© EDP Sciences, 2005
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