arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1208.6497q-bio.PE
收藏

在加权网络上预测流行病

Predicting epidemics on weighted networks

Christel Kamp, Mathieu Moslonka-Lefebvre, Samuel Alizon

摘要:

宿主之间的接触结构对疾病传播有着重要的影响。然而,流行病学中使用的大多数基于网络的模型往往忽略了接触权重的异质性。这一假设与许多接触网络(如性接触网络)的数据不一致,对流行病学模型的预测有很大影响。模型通常忽略传输异质性的原因之一是我们目前缺乏分析加权网络的工具,因此大多数研究依赖于数值模拟。在这里,我们提出了一个新的框架来估计关键的流行病学变量,如早期流行病的扩展速度和基本的生殖比,从联合概率分布的合作伙伴(接触)和互动事件的数量,通过接触加权。该框架还允许推导出使用数值模拟验证的流行病流行和接触行为的全时过程。我们的框架允许将更现实的接触网络纳入流行病学模型,从而改善对新出现的传染病传播的预测。

英文摘要:

The contact structure between hosts has a critical influence on disease spread. However, most networkbased models used in epidemiology tend to ignore heterogeneity in the weighting of contacts. This assumption is known to be at odds with the data for many contact networks (e.g. sexual contact networks) and to have a strong effect on the predictions of epidemiological models. One of the reasons why models usually ignore heterogeneity in transmission is that we currently lack tools to analyze weighted networks, such that most studies rely on numerical simulations. Here, we present a novel framework to estimate key epidemiological variables, such as the rate of early epidemic expansion and the basic reproductive ratio, from joint probability distributions of number of partners (contacts) and number of interaction events through which contacts are weighted. This framework also allows for a derivation of the full time course of epidemic prevalence and contact behaviour which is validated using numerical simulations. Our framework allows for the incorporation of more realistic contact networks into epidemiological models, thus improving predictions on the spread of emerging infectious diseases.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑