AN SIR EPIDEMIC MODEL WITH VACCINATION IN A PATCHY ENVIRONMENT

被引：7
|
作者：
Cui, Qianqian [1 ]
Qiu, Zhipeng [1 ]
Ding, Ling [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Sci, Nanjing 210094, Jiangsu, Peoples R China
来源：
MATHEMATICAL BIOSCIENCES AND ENGINEERING | 2017年 / 14卷 / 5-6期
基金：
中国国家自然科学基金;
关键词：
SIR model; vaccination; patchy environment; transmission dynamics; reproduction number; DISEASE TRANSMISSION; DYNAMICS;
D O I：
10.3934/mbe.2017059
中图分类号：
Q [生物科学];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
In this paper, an SIR patch model with vaccination is formulated to investigate the effect of vaccination coverage and the impact of human mobility on the spread of diseases among patches. The control reproduction number ER is derived. It shows that the disease-free equilibrium is unique and is globally asymptotically stable if R-v < 1, and unstable if R-v > 1. The sufficient condition for the local stability of boundary equilibria and the existence of equilibria are obtained for the case n = 2. Numerical simulations indicate that vaccines can control and prevent the outbreak of infectious in all patches while migration may magnify the outbreak size in one patch and shrink the outbreak size in other patch.
引用
收藏
页码：1141 / 1157
页数：17
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