A new look at the critical community size for childhood infections
A new look at the critical community size for childhood infections
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DOI：
10.1016/j.tpb.2005.01.002
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发表时间：
2005-05-01
影响因子：
1.4
通讯作者：
Nåsell, I
中科院分区：
文献类型：
--
作者：
Nåsell, I
研究了经典地方病模型的拟平稳性和灭绝时间。注意力被限制在参数空间中的准平稳分布是非正态的过渡区域。本文提出了一种新的关于拟平稳感染个体边缘分布的近似方法。它导致一个简单的明确的表达近似的临界社区规模的模型参数。(c)2005年爱思唯尔公司All rights reserved.
Quasi-stationarity and time to extinction are studied for the classic endemic model. Attention is restricted to the transition region in parameter space where the quasi-stationary distribution is non-normal. A new approximation of the marginal distribution of infected individuals in quasi-stationarity is presented. It leads to a simple explicit expression for an approximation of the critical community size in terms of model parameters. (c) 2005 Elsevier Inc. All rights reserved.