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arXiv 2004.03859q-bio.PEphysics.soc-ph
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COVID-19大流行:增长模式、幂律比例和饱和度

The COVID-19 pandemic: growth patterns, power law scaling, and saturation

H. M. Singer

摘要:

越来越多的国家显示,由于政府实施有效的封锁和社交距离措施,新冠肺炎感染人数显著放缓。我们通过局部斜率分析分析了受影响最严重的25个国家的增长行为,发现各个国家根据封锁协议的严格程度遵循三种不同的模式:指数上升和下降,幂律或逻辑。对于呈现幂律增长的国家,我们确定了标度指数。对于感染率大幅下降的国家,我们推断了感染人数的预期饱和度和预期最后日期。使用了两种不同的外推方法(logistic和抛物线)。这两种方法在饱和度和结束日期的数量级上是一致的。用同样的方法分析全球感染率。这些外推的相关性和准确性进行了讨论。

英文摘要:

More and more countries show a significant slowdown in the number of new COVID-19 infections due to effective governmentally instituted lockdown and social distancing measures. We have analyzed the growth behavior of the top 25 most affected countries by means of a local slope analysis and found three distinct patterns that individual countries follow depending on the strictness of the lockdown protocols: exponential rise and fall, power law, or logistic. For countries showing power law growth we have determined the scaling exponents. For countries that showed a strong slowdown in the rate of infections we have extrapolated the expected saturation of the number of infections and the expected final date. Two different extrapolation methods (logistic and parabolic) were used. Both methods agree on the order of magnitude of saturation and end dates. Global infections rates are analyzed with the same methods. The relevance and accuracy of these extrapolations is discussed.

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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