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Title: Epidemic spreading by objective traveling
Authors: Tang, M. 
Liu, Z.
Li, B. 
Issue Date: 2009
Citation: Tang, M., Liu, Z., Li, B. (2009). Epidemic spreading by objective traveling. EPL 87 (1) : -. ScholarBank@NUS Repository.
Abstract: A fundamental feature of agent traveling in social networks is that traveling is usually not a random walk but with a specific destination and goes through the shortest path from starting to destination. A serious consequence of the objective traveling is that it may result in a fast epidemic spreading, such as SARS etc. In this letter we present a reaction-traveling model to study how the objective traveling influences the epidemic spreading. We consider a random scale-free meta-population network with sub-population at each node. Through a SIS model we theoretically prove that near the threshold of epidemic outbreak, the objective traveling can significantly enhance the final infected population and the infected fraction at a node is proportional to its betweenness for the traveling agents and approximately proportional to its degree for the non-traveling agents. Numerical simulations have confirmed the theoretical predictions. Copyright © 2009 EPLA.
Source Title: EPL
ISSN: 02955075
DOI: 10.1209/0295-5075/87/18005
Appears in Collections:Staff Publications

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