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Geographical effects on epidemic spreading in scale-free networks

Xin-Jian Xu·Wen-Xu Wang·Tao Zhou·Guanrong Chen
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Abstract

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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Xin-Jian Xu, Wen-Xu Wang, Tao Zhou, Guanrong Chen. 2006-06-30. Geographical effects on epidemic spreading in scale-free networks. https://doi.org/10.1142/s0129183106010194

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