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新冠疫情封锁的跷跷板情景:模拟与失效分析。

Seesaw scenarios of lockdown for COVID-19 pandemic: Simulation and failure analysis.

作者信息

Afshar-Nadjafi Behrouz, Niaki Seyed Taghi Akhavan

机构信息

Department of Industrial Engineering, Faculty of Industrial and Mechanical Engineering, Islamic Azad University, Qazvin Branch, Qazvin, Iran.

Department of Industrial Engineering, Sharif University of Technology, Tehran, Iran.

出版信息

Sustain Cities Soc. 2021 Oct;73:103108. doi: 10.1016/j.scs.2021.103108. Epub 2021 Jun 20.

Abstract

The ongoing COVOD-19(SARS-CoV-2) outbreak has had a devastating impact on the economy, education and businesses. In this paper, the behavior of an epidemic is simulated on different contact networks. Herein, it is assumed that the infection may be transmitted at each contact from an infected person to a susceptible individual with a given probability. The probability of transmitting the disease may change due to the individuals' social behavior or interventions prescribed by the authorities. We utilized simulation on the contact networks to demonstrate how seesaw scenarios of lockdown can curb infection and level the pandemic without maximum pressure on the poor societies. Soft scenarios consist of closing businesses 2, 3, and 4 days in between with four levels of lockdown respected by 25%, 50%, 75%, and 100% of the population. The findings reveal that the outbreak can be flattened under softer alternatives instead of a doomsday scenario of complete lockdown. More specifically, it is turned out that proposed soft lockdown strategies can flatten up to 120% of the pandemic course. It is also revealed that transmission probability has a crucial role in the course of the infection, growth rate of the infection, and the number of infected individuals.

摘要

持续的COVID-19(严重急性呼吸综合征冠状病毒2)疫情对经济、教育和企业造成了毁灭性影响。在本文中,我们在不同的接触网络上模拟了疫情的传播行为。在此,假设每次接触时,感染者都有一定概率将病毒传播给易感个体。疾病传播的概率可能会因个体的社会行为或当局规定的干预措施而改变。我们利用接触网络模拟来展示封锁的跷跷板效应如何在不给贫困社会带来最大压力的情况下控制感染并减缓疫情蔓延。温和方案包括在不同时间间隔内关闭企业2天、3天和4天,同时有25%、50%、75%和100%的人口遵守四级封锁措施。研究结果表明,与完全封锁这种末日场景相比,在更温和的替代方案下疫情可以得到缓解。更具体地说,事实证明,所提出的温和封锁策略最多可使疫情进程平缓120%。研究还表明,传播概率在感染过程、感染增长率以及感染个体数量方面起着关键作用。

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