Understanding Infection Progression under Strong Control Measures through Universal COVID‐19 Growth Signatures

摘要

Widespread growth signatures in COVID‐19 confirmed case counts are reported, with sharp transitions between three distinct dynamical regimes (exponential, superlinear, and sublinear). Through analytical and numerical analysis, a novel framework is developed that exploits information in these signatures. An approach well known to physics is applied, where one looks for common dynamical features, independently from differences in other factors. These features and associated scaling laws are used as a powerful tool to pinpoint regions where analytical derivations are effective, get an insight into qualitative changes of the disease progression, and infer the key infection parameters. The developed framework for joint analytical and numerical analysis of empirically observed COVID‐19 growth patterns can lead to a fundamental understanding of infection progression under strong control measures, applicable to outbursts of both COVID‐19 and other infectious diseases. Widespread growth signatures are reported for COVID‐19 confirmed case counts, with sharp transitions between distinct dynamical regimes. These signatures provide important quantitative information for understanding the disease spread and inferring key infection progression parameters, which can lead to a more fundamental understanding of infection progression under strong control measures.