Global stability of general cholera models with nonlinear incidence and removal rates
Global stability of general cholera models with nonlinear incidence and removal rates
复制标题
具有非线性发病率和清除率的一般霍乱模型的全局稳定性
DOI:
10.1016/j.jfranklin.2015.03.030
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发表时间:
2015-06
影响因子:
4.1
通讯作者:
Cao, Jinde
中科院分区:
文献类型:
--
作者:
Wang, Yi;Cao, Jinde
In the real world, cholera may be transmitted through both direct human-to-human and indirect water-to-human mechanisms, but most of the previous studies assume linear progression rates for multistage models or linear death rate of infected individuals, which limits well understanding of the transmission dynamics of cholera. In this paper, we formulate a general compartmental multistage cholera model that incorporates nonlinear host recruitment, nonlinear incidence, nonlinear removal and nonlinear progression rates. Under biologically motivated assumptions, the basic reproduction number R 0 is derived in detail, and presents a sharp threshold property. In particular, if R 0< 1, the disease-free equilibrium is globally asymptotically stable, and cholera dies out from all stages of host and water independent of initial burden; whereas if R 0> 1, by employing Lyapunov functions and graph-theoretic results the endemic equilibrium is globally asymptotically stable, which also guarantees its uniqueness. The results are of biological significance for devising control strategies and possible extensions of the model are also discussed.
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影响因子:
15.8
作者:
Hartley DM;Morris JG Jr;Smith DL
通讯作者:
Smith DL
DOI:
--
发表时间:
1979-09
期刊:
Revue d'epidemiologie et de sante publique
影响因子:
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作者:
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通讯作者:
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发表时间:
2002
期刊:
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影响因子:
--
作者:
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通讯作者:
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DOI:
10.2307/2405002
发表时间:
1995-01
期刊:
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影响因子:
--
作者:
Hal L. Smith;P. Waltman
通讯作者:
Hal L. Smith;P. Waltman
影响因子:
2.6
作者:
Feng, Zhilan
通讯作者:
Feng, Zhilan