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arXiv 1502.01217math.DS
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传染病的动态模型:疫苗接种和治疗的作用

A Dynamic Model for Infectious Diseases: The Role of Vaccination and Treatment

P. Raja Sekhara Rao, M. Naresh Kumar

摘要:

了解传染病的动态有助于设计适当的策略,以控制其在人群中的传播。近年来的数学模型主要用于研究某些特定类型传染病的动力学。在本文中,我们提出了一个新的传染病传播模型的易感,感染,并恢复人口,并研究其动力学存在的潜伏期延迟和复发的疾病。研究了在存在时间延迟的情况下,治疗和疫苗接种工作对感染传播的影响。在各种情况下,得到了平衡点局部稳定和稳定性变化的充分条件。对于该模型的一个重要特例,研究了其全局稳定性问题。本研究中进行的模拟显示了治疗率在控制疾病传播方面的重要性。据观察,即使在加强疫苗接种下,孵育延迟也会对系统产生影响。目前的研究清楚地表明,与普遍认为只有通过接种疫苗才能根除疾病相比,存在时间延迟的治疗率将遏制疾病。

英文摘要:

Understanding dynamics of an infectious disease helps in designing appropriate strategies for containing its spread in a population. Recent mathematical models are aimed at studying dynamics of some specific types of infectious diseases. In this paper we propose a new model for infectious diseases spread having susceptible, infected, and recovered populations and study its dynamics in presence of incubation delays and relapse of the disease. The influence of treatment and vaccination efforts on the spread of infection in presence of time delays are studied. Sufficient conditions for local stability of the equilibria and change of stability are derived in various cases. The problem of global stability is studied for an important special case of the model. Simulations carried out in this study brought out the importance of treatment rate in controlling the disease spread. It is observed that incubation delays have influence on the system even under enhanced vaccination. The present study has clearly brought out the fact that treatment rate in presence of time delays would contain the disease as compared to popular belief that eradication can only be done through vaccination.

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。

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