论文标题
COVID-19锁定诱导疾病减轻移动网络的结构变化
COVID-19 lockdown induces disease-mitigating structural changes in mobility networks
论文作者
论文摘要
在COVID-19大流行之后，许多国家采取了遏制措施，以减少疾病的传播。使用数字数据来源的研究表明，在多个国家 /地区有效地降低了个体的流动性。但是，尚不清楚这些减少是否导致移动性网络的更深层次结构变化，以及这种变化如何影响网络上的动态过程。在这里，我们使用移动电话用户的移动数据表明，德国的移动性不仅大大降低了：锁定措施导致了移动性网络的实质性和持久的结构变化。我们发现，长距离旅行的降低不成比例。远程网络连接的修剪会导致更本地的聚类网络和“小世界”效应的适度。我们证明，这些结构变化通过“平坦”流行曲线并将扩散延迟到地理位置较远的区域，对流行病扩散过程具有相当大的影响。
In the wake of the COVID-19 pandemic many countries implemented containment measures to reduce disease transmission. Studies using digital data sources show that the mobility of individuals was effectively reduced in multiple countries. However, it remains unclear whether these reductions caused deeper structural changes in mobility networks, and how such changes may affect dynamic processes on the network. Here we use movement data of mobile phone users to show that mobility in Germany has not only been reduced considerably: Lockdown measures caused substantial and long-lasting structural changes in the mobility network. We find that long-distance travel was reduced disproportionately strongly. The trimming of long-range network connectivity leads to a more local, clustered network and a moderation of the "small-world" effect. We demonstrate that these structural changes have a considerable effect on epidemic spreading processes by "flattening" the epidemic curve and delaying the spread to geographically distant regions.
