Geographical effects on epidemic spreading in scale-free networks

Details Geographical effects on epidemic spreading in scale-free networks Geographical effects on epidemic spreading in scale-free networks

2006-06-30

arxiv.org/abs/physics/0606256v1

Int. J. Mod. Phys. C 17, 1815 (2006).

Physics

Physics and Society

4 pages, 5 figures

Scientific paper

Many real networks are embedded in a metric space: the interactions among individuals depend on their spatial distances and usually take place among their nearest neighbors. In this paper, we introduce a modified susceptible-infected-susceptible (SIS) model to study geographical effects on the spread of diseases by assuming that the probability of a healthy individual infected by an infectious one is inversely proportional to the Euclidean distance between them. It is found that geography plays a more important role than hubs in disease spreading: the more geographically constrained the network is, the more highly the epidemic prevails.

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