The impact of lockdown timing on COVID-19 transmission across US counties.

ABSTRACT:

Background

Many countries have implemented lockdowns to reduce COVID-19 transmission. However, there is no consensus on the optimal timing of these lockdowns to control community spread of the disease. Here we evaluated the relationship between timing of lockdowns, along with other risk factors, and the growth trajectories of COVID-19 across 3,112 counties in the US.

Methods

We ascertained dates for lockdowns and implementation of various non-pharmaceutical interventions at a county level and merged these data with those of US census and county-specific COVID-19 daily cumulative case counts. We then applied a Functional Principal Component (FPC) analysis on this dataset to generate FPC scores, which were used as a surrogate variable to describe the trajectory of daily cumula

SUBMITTER: Huang X 

PROVIDER: S-EPMC8283304 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature