Effect of incubation period on epidemic spreading
in complex networks
Huang Wei; Jiang Rui; Hu Mao-Bin; Wu Qing-Song
【期刊名称】《《中国物理：英文版》》 【年(卷),期】2009(018)004
【摘要】We study the effect of incubation period on epidemic spreading in the Barabasi-Albert scale-free network and the Watts-Strogatz small world network by using a Suspectable-Incubated-Infected-Suspectable model.Our analytical investigations show that the epidemic threshold is independent of incubation period in both networks,which is verified by our large-scale simulation results.We also investigate the effect of incubation period on the epidemic dynamics in a supercritical regime.It is found that with the increase of incubation period Ω,a damped oscillation evolution of ρΤ(the ratio of persons in incubated state)appears and the time needed to reach a saturation value increases.Moreover,the steady value of ρI increases and approaches to an asymptotic constant with the value of Ω increasing.As a result,the infected ratio ρΤ decreases with the increase of Ω according to a power law.
【总页数】6页(1306-1311) 【关键词】
【作者】Huang Wei; Jiang Rui; Hu Mao-Bin; Wu Qing-Song
Effect of incubation period on epidemic spreading in complex networks
