An effective degree model for epidemics on dynamic networks

In this paper we present a new ODE based framework for modelling disease transmission on dynamic contact networks. We adapt and extend the effective degree model for a static network to account for the random creation and deletion of links between individuals. The resulting set of ODEs is solved numerically and results are compared to those obtained using individual-based stochastic network simulations. We show that the ODEs display excellent agreement for the evolution of both the disease and the network, and is able to accurately capture the epidemic threshold for a wide range of parameters. Using the proposed model we show that mild epidemics can be controlled while keeping the contact network well connected, and this is in contrast with severe epidemics, where successful control via link removal leads to a disconnected network.

[1]  L. Amaral,et al.  The web of human sexual contacts , 2001, Nature.

[2]  Albert-László Barabási,et al.  Statistical mechanics of complex networks , 2001, ArXiv.

[3]  Thilo Gross,et al.  Adaptive coevolutionary networks: a review , 2007, Journal of The Royal Society Interface.

[4]  Mark E. J. Newman,et al.  The Structure and Function of Complex Networks , 2003, SIAM Rev..

[5]  L. Meyers,et al.  Susceptible–infected–recovered epidemics in dynamic contact networks , 2007, Proceedings of the Royal Society B: Biological Sciences.

[6]  Alain Barrat,et al.  Who's talking first? Consensus or lack thereof in coevolving opinion formation models. , 2007, Physical review letters.

[7]  Peter Grindrod,et al.  Evolving graphs: dynamical models, inverse problems and propagation , 2010, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences.

[8]  L. Meyers,et al.  Epidemic thresholds in dynamic contact networks , 2009, Journal of The Royal Society Interface.

[9]  S. Strogatz Exploring complex networks , 2001, Nature.

[10]  M. Newman Spread of epidemic disease on networks. , 2002, Physical review. E, Statistical, nonlinear, and soft matter physics.

[11]  Sven Van Segbroeck,et al.  Adaptive Contact Networks Change Effective Disease Infectiousness and Dynamics , 2010, PLoS Comput. Biol..

[12]  M. Newman,et al.  Network theory and SARS: predicting outbreak diversity , 2004, Journal of Theoretical Biology.

[13]  P. Trapman,et al.  On analytical approaches to epidemics on networks. , 2007, Theoretical population biology.

[14]  W. Edmunds,et al.  Dynamic social networks and the implications for the spread of infectious disease , 2008, Journal of The Royal Society Interface.

[15]  D. Zanette,et al.  Infection Spreading in a Population with Evolving Contacts , 2007, Journal of biological physics.

[16]  Attila Rákos,et al.  Epidemic spreading in evolving networks. , 2010, Physical review. E, Statistical, nonlinear, and soft matter physics.

[17]  L. Meyers,et al.  When individual behaviour matters: homogeneous and network models in epidemiology , 2007, Journal of The Royal Society Interface.

[18]  M. Keeling,et al.  Networks and epidemic models , 2005, Journal of The Royal Society Interface.