Epidemic spreading in scale-free networks

Details Epidemic spreading in scale-free networks Epidemic spreading in scale-free networks

2000-10-20

arxiv.org/abs/cond-mat/0010317v1

Phys. Rev. Lett. 86, 3200 (2001)

Physics

Condensed Matter

Statistical Mechanics

13 pages, RevTeX style, 3 EPS figures

Scientific paper

10.1103/PhysRevLett.86.3200

The Internet, as well as many other networks, has a very complex connectivity recently modeled by the class of scale-free networks. This feature, which appears to be very efficient for a communications network, favors at the same time the spreading of computer viruses. We analyze real data from computer virus infections and find the average lifetime and prevalence of viral strains on the Internet. We define a dynamical model for the spreading of infections on scale-free networks, finding the absence of an epidemic threshold and its associated critical behavior. This new epidemiological framework rationalize data of computer viruses and could help in the understanding of other spreading phenomena on communication and social networks.

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