Dispersal, disease and life-history evolution
Dispersal, disease and life-history evolution
复制标题
DOI：
10.1016/s0025-5564(01)00065-7
复制
发表时间：
2001-09-01
影响因子：
4.3
通讯作者：
Yakubu, AA
中科院分区：
文献类型：
--
作者：
Castillo-Chavez, C;Yakubu, AA
离散时间易感染易感（S-I-S）疾病传播。模型可以在很宽的参数值范围内表现出双稳性（交替稳定平衡）。我们说明的丰富性所产生的这种“简单的”非线性系统的研究中的两个补丁传染病模型与疾病增强或疾病抑制扩散。斑块之间的传播可以对当地斑块疾病动态产生深远的影响。事实上，斑块之间的扩散可能会引起双稳定性的参数制度，而没有双稳定性的单斑块模型。(C)2001 Elsevier Science Inc. All rights reserved.
Discrete-time susceptible-infective-susceptible (S-I-S) disease transmission. models can exhibit bistability (alternative stable equilibria) over a wide range of parameter values. We illustrate the richness generated by such 'simple' non-linear systems in the study of two patch epidemic models with disease-enhanced or disease-suppressed dispersal. Dispersal between patches can have a profound impact on local patch disease dynamics. In fact, dispersal between patches may give rise to bistability in parameter regimes without bistability in single patch models. (C) 2001 Elsevier Science Inc. All rights reserved.