Abstract

The interplay between individual behaviors and epidemic dynamics in complex networks is a topic of recent interest. In particular, individuals can obtain different types of information about the disease and respond by altering their behaviors, and this can affect the spreading dynamics, possibly in a significant way. We propose a model where individuals' behavioral response is based on a generic type of local information, i.e., the number of neighbors that has been infected with the disease. Mathematically, the response can be characterized by a reduction in the transmission rate by a factor that depends on the number of infected neighbors. Utilizing the standard susceptible-infected-susceptible and susceptible-infected-recovery dynamical models for epidemic spreading, we derive a theoretical formula for the epidemic threshold and provide numerical verification. Our analysis lays on a solid quantitative footing the intuition that individual behavioral response can in general suppress epidemic spreading. Furthermore, we find that the hub nodes play the role of "double-edged sword" in that they can either suppress or promote outbreak, depending on their responses to the epidemic, providing additional support for the idea that these nodes are key to controlling epidemic spreading in complex networks.

Original languageEnglish (US)
Article number043106
JournalChaos
Volume24
Issue number4
DOIs
StatePublished - Oct 20 2014

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Epidemic Spreading
Complex networks
Complex Networks
retarding
Numerical Verification
Recovery
hubs
Dynamical Model
Vertex of a graph
recovery
thresholds

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics
  • Physics and Astronomy(all)
  • Applied Mathematics

Cite this

Suppression of epidemic spreading in complex networks by local information based behavioral responses. / Zhang, Hai Feng; Xie, Jia Rong; Tang, Ming; Lai, Ying-Cheng.

In: Chaos, Vol. 24, No. 4, 043106, 20.10.2014.

Research output: Contribution to journalArticle

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