Epidemic spreading in scale-free networks.

  title={Epidemic spreading in scale-free networks.},
  author={Romualdo Pastor-Satorras and Alessandro Vespignani},
  journal={Physical review letters},
  volume={86 14},
The Internet 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 persistence 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… 
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