In an emergency evacuation, people almost always come in close proximity as they quickly leave a built environment under a potential threat. With COVID19, this situation presents yet another challenge: that of getting unintentionally exposed to an infected individual. To assess the epidemiological consequences of an emergency evacuation, we expanded a popular pedestrian dynamic model to enable social distancing during a normal exit and analyze the effect of possible transmission through respiratory droplets and aerosol. Computer simulations point to a troubling outcome, whereby the benefits of a quick exit could be outweighed by the risk of infection.

中文翻译：

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紧急疏散对COVID19传播的影响

在紧急疏散中，人们几乎总是近在咫尺，因为他们在潜在威胁下迅速离开建筑环境。对于COVID19，这种情况带来了另一个挑战：无意间暴露于受感染的个体。为了评估紧急疏散的流行病学后果，我们扩展了流行的行人动态模型，以使正常出行期间的社交距离得以扩大，并分析了可能通过呼吸道飞沫和气溶胶传播的影响。计算机模拟指出了令人不安的结果，即快速退出的好处可能会被感染的风险所抵消。