tetano
Editor, Senior Moderator
Emerg Infect Dis
. 2021 Aug 16;27(10).
doi: 10.3201/eid2710.210061. Online ahead of print.
Severe Acute Respiratory Syndrome Coronavirus 2 Transmission in Georgia, USA, February 1-July 13, 2020
Yuke Wang, Casey Siesel, Yangping Chen, Ben Lopman, Laura Edison, Michael Thomas, Carly Adams, Max Lau, Peter F M Teunis
Abstract
The serial interval and effective reproduction number for coronavirus disease (COVID-19) are heterogenous, varying by demographic characteristics, region, and period. During February 1-July 13, 2020, we identified 4,080 transmission pairs in Georgia, USA, by using contact tracing information from COVID-19 cases reported to the Georgia Department of Public Health. We examined how various transmission characteristics were affected by symptoms, demographics, and period (during shelter-in-place and after subsequent reopening) and estimated the time course of reproduction numbers for all 159 Georgia counties. Transmission varied by time and place but also by persons' sex and race. The mean serial interval decreased from 5.97 days in February-April to 4.40 days in June-July. Younger adults (20-50 years of age) were involved in most transmission events occurring during or after reopening. The shelter-in-place period was not long enough to prevent sustained virus transmission in densely populated urban areas connected by major transportation links.
Keywords: 2019 novel coronavirus disease; COVID-19; Georgia; SARS-CoV-2; United States; coronavirus disease; reproduction number; respiratory infections; serial interval; severe acute respiratory syndrome coronavirus 2; shelter-in-place; transmission; viruses; zoonoses.
. 2021 Aug 16;27(10).
doi: 10.3201/eid2710.210061. Online ahead of print.
Severe Acute Respiratory Syndrome Coronavirus 2 Transmission in Georgia, USA, February 1-July 13, 2020
Yuke Wang, Casey Siesel, Yangping Chen, Ben Lopman, Laura Edison, Michael Thomas, Carly Adams, Max Lau, Peter F M Teunis
- PMID: 34399085
- DOI: 10.3201/eid2710.210061
Abstract
The serial interval and effective reproduction number for coronavirus disease (COVID-19) are heterogenous, varying by demographic characteristics, region, and period. During February 1-July 13, 2020, we identified 4,080 transmission pairs in Georgia, USA, by using contact tracing information from COVID-19 cases reported to the Georgia Department of Public Health. We examined how various transmission characteristics were affected by symptoms, demographics, and period (during shelter-in-place and after subsequent reopening) and estimated the time course of reproduction numbers for all 159 Georgia counties. Transmission varied by time and place but also by persons' sex and race. The mean serial interval decreased from 5.97 days in February-April to 4.40 days in June-July. Younger adults (20-50 years of age) were involved in most transmission events occurring during or after reopening. The shelter-in-place period was not long enough to prevent sustained virus transmission in densely populated urban areas connected by major transportation links.
Keywords: 2019 novel coronavirus disease; COVID-19; Georgia; SARS-CoV-2; United States; coronavirus disease; reproduction number; respiratory infections; serial interval; severe acute respiratory syndrome coronavirus 2; shelter-in-place; transmission; viruses; zoonoses.