Immunization of susceptible–infected model on scale-free networks

Wen-Jie Bai, Tao Zhou and Bing-Hong Wang

Physica A: Statistical Mechanics and its Applications, 2007, vol. 384, issue 2, 656-662

Abstract: In this paper, we investigate two major immunization strategies, random immunization and targeted immunization, of the susceptible–infected (SI) model on the Barabási–Albert (BA) networks. For the heterogeneous structure, the random strategy is quite ineffective if the vaccinated proportion is small, while the targeted one which prefers to vaccinate the individuals with the largest degree can sharply depress the epidemic spreading even only a tiny fraction of population are vaccinated. The analytical solution is also obtained, which can capture the trend of velocity change vs. the amount of vaccinated population.

Keywords: Scale-free networks; Epidemic spreading; SI model; Immunization (search for similar items in EconPapers)
Date: 2007
References: View complete reference list from CitEc
Citations: View citations in EconPapers (10)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:384:y:2007:i:2:p:656-662

DOI: 10.1016/j.physa.2007.04.107

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