Fluctuating epidemics on adaptive networks

Details Fluctuating epidemics on adaptive networks Fluctuating epidemics on adaptive networks

2008-01-03

arxiv.org/abs/0801.0606v1

Biology

Quantitative Biology

Populations and Evolution

Submitted to Phys Rev E

Scientific paper

10.1103/PhysRevE.77.066101

A model for epidemics on an adaptive network is considered. Nodes follow an SIRS (susceptible-infective-recovered-susceptible) pattern. Connections are rewired to break links from non-infected nodes to infected nodes and are reformed to connect to other non-infected nodes, as the nodes that are not infected try to avoid the infection. Monte Carlo simulation and numerical solution of a mean field model are employed. The introduction of rewiring affects both the network structure and the epidemic dynamics. Degree distributions are altered, and the average distance from a node to the nearest infective increases. The rewiring leads to regions of bistability where either an endemic or a disease-free steady state can exist. Fluctuations around the endemic state and the lifetime of the endemic state are considered. The fluctuations are found to exhibit power law behavior.

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