Immunization of Susceptible-Infected Model on Scale-Free networks

Details Immunization of Susceptible-Infected Model on Scale-Free networks Immunization of Susceptible-Infected Model on Scale-Free networks

2006-10-18

arxiv.org/abs/physics/0610138v1

Physica A 384, 656-662 (2007)

Physics

Biological Physics

5 pages, 4 figures

Scientific paper

10.1016/j.physa.2007.04.107

In this paper, we investigate two major immunization strategies, random immunization and targeted immunization, of the susceptible-infected (SI) Model on the Barab\'{a}si-Albert (BA) networks. For the heterogenous structure, the random strategy is quite ineffective if the vaccinated proportion is quite small, while the targeted one which prefers to vaccinate the individuals with the largest degree can sharply depress the epidemic spreading even only a small amount of population are vaccinated. The analytical solution is also obtained,which can capture the trend of velocity change versus the amount of vaccinated population.

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