SARS-CoV-2 Transmission Potential and Policy Changes in South Carolina, February 2020 - January 2021.

ABSTRACT:

Introduction

We aimed to examine how public health policies influenced the dynamics of coronavirus disease 2019 (COVID-19) time-varying reproductive number (R _t ) in South Carolina from February 26, 2020, to January 1, 2021.

Methods

COVID-19 case series (March 6, 2020, to January 10, 2021) were shifted by 9 d to approximate the infection date. We analyzed the effects of state and county policies on R _t using EpiEstim. We performed linear regression to evaluate if per-capita cumulative case count varies across counties with different population size.

Results

R _t shifted from 2-3 in March to <1 during April and May. R _t rose over the summer and stayed between 1.4 and 0.7.

SUBMITTER: Davies MR 

PROVIDER: S-EPMC9530385 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature