COVID-19 Contact Tracing Outcomes in Washington State, August and October 2020

Introduction: Case investigation and contact tracing are important tools to limit the spread of SARS-CoV-2, particularly when implemented efficiently. Our objective was to evaluate participation in and timeliness of COVID-19 contact tracing and whether these measures changed over time.Methods: We re...

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Autores principales:	Robert A. Bonacci, Lillian M. Manahan, James S. Miller, Patrick K. Moonan, Missy B. Lipparelli, Lisa M. DiFedele, Lora B. Davis, R. Ryan Lash, John E. Oeltmann
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	COVID-19 contact tracing case investigation public health surveillance Public aspects of medicine RA1-1270
Acceso en línea:	https://doaj.org/article/c0e13a3417024a3385b2e59d18de48fc
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spelling	oai:doaj.org-article:c0e13a3417024a3385b2e59d18de48fc2021-12-01T07:13:13ZCOVID-19 Contact Tracing Outcomes in Washington State, August and October 20202296-256510.3389/fpubh.2021.782296https://doaj.org/article/c0e13a3417024a3385b2e59d18de48fc2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fpubh.2021.782296/fullhttps://doaj.org/toc/2296-2565Introduction: Case investigation and contact tracing are important tools to limit the spread of SARS-CoV-2, particularly when implemented efficiently. Our objective was to evaluate participation in and timeliness of COVID-19 contact tracing and whether these measures changed over time.Methods: We retrospectively assessed COVID-19 case investigation and contact tracing surveillance data from the Washington State centralized program for August 1–31, 2020 and October 1–31, 2020. We combined SARS-CoV-2 testing reports with contact tracing data to compare completeness, reporting of contacts, and program timeliness.Results: For August and October respectively, 4,600 (of 12,521) and 2,166 (of 16,269) individuals with COVID-19 were referred to the state program for case investigation. Investigators called 100% of referred individuals; 65% (August) and 76% (October) were interviewed. Of individuals interviewed, 33% reported contacts in August and 45% in October, with only mild variation by age, sex, race/ethnicity, and urbanicity. In August, 992 individuals with COVID-19 reported a total of 2,584 contacts (mean, 2.6), and in October, 739 individuals reported 2,218 contacts (mean, 3.0). Among contacts, 86% and 78% participated in interviews for August and October. The median time elapsed from specimen collection to contact interview was 4 days in August and 3 days in October, and from symptom onset to contact interview was 7 days in August and 6 days in October.Conclusions: While contact tracing improved with time, the proportion of individuals disclosing contacts remained below 50% and differed minimally by demographic characteristics. The longest time interval occurred between symptom onset and test result notification. Improving elicitation of contacts and timeliness of contact tracing may further decrease SARS-CoV-2 transmission.Robert A. BonacciRobert A. BonacciLillian M. ManahanJames S. MillerJames S. MillerJames S. MillerPatrick K. MoonanMissy B. LipparelliLisa M. DiFedeleLora B. DavisR. Ryan LashR. Ryan LashJohn E. OeltmannFrontiers Media S.A.articleCOVID-19contact tracingcase investigationpublic healthsurveillancePublic aspects of medicineRA1-1270ENFrontiers in Public Health, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	COVID-19 contact tracing case investigation public health surveillance Public aspects of medicine RA1-1270
spellingShingle	COVID-19 contact tracing case investigation public health surveillance Public aspects of medicine RA1-1270 Robert A. Bonacci Robert A. Bonacci Lillian M. Manahan James S. Miller James S. Miller James S. Miller Patrick K. Moonan Missy B. Lipparelli Lisa M. DiFedele Lora B. Davis R. Ryan Lash R. Ryan Lash John E. Oeltmann COVID-19 Contact Tracing Outcomes in Washington State, August and October 2020
description	Introduction: Case investigation and contact tracing are important tools to limit the spread of SARS-CoV-2, particularly when implemented efficiently. Our objective was to evaluate participation in and timeliness of COVID-19 contact tracing and whether these measures changed over time.Methods: We retrospectively assessed COVID-19 case investigation and contact tracing surveillance data from the Washington State centralized program for August 1–31, 2020 and October 1–31, 2020. We combined SARS-CoV-2 testing reports with contact tracing data to compare completeness, reporting of contacts, and program timeliness.Results: For August and October respectively, 4,600 (of 12,521) and 2,166 (of 16,269) individuals with COVID-19 were referred to the state program for case investigation. Investigators called 100% of referred individuals; 65% (August) and 76% (October) were interviewed. Of individuals interviewed, 33% reported contacts in August and 45% in October, with only mild variation by age, sex, race/ethnicity, and urbanicity. In August, 992 individuals with COVID-19 reported a total of 2,584 contacts (mean, 2.6), and in October, 739 individuals reported 2,218 contacts (mean, 3.0). Among contacts, 86% and 78% participated in interviews for August and October. The median time elapsed from specimen collection to contact interview was 4 days in August and 3 days in October, and from symptom onset to contact interview was 7 days in August and 6 days in October.Conclusions: While contact tracing improved with time, the proportion of individuals disclosing contacts remained below 50% and differed minimally by demographic characteristics. The longest time interval occurred between symptom onset and test result notification. Improving elicitation of contacts and timeliness of contact tracing may further decrease SARS-CoV-2 transmission.
format	article
author	Robert A. Bonacci Robert A. Bonacci Lillian M. Manahan James S. Miller James S. Miller James S. Miller Patrick K. Moonan Missy B. Lipparelli Lisa M. DiFedele Lora B. Davis R. Ryan Lash R. Ryan Lash John E. Oeltmann
author_facet	Robert A. Bonacci Robert A. Bonacci Lillian M. Manahan James S. Miller James S. Miller James S. Miller Patrick K. Moonan Missy B. Lipparelli Lisa M. DiFedele Lora B. Davis R. Ryan Lash R. Ryan Lash John E. Oeltmann
author_sort	Robert A. Bonacci
title	COVID-19 Contact Tracing Outcomes in Washington State, August and October 2020
title_short	COVID-19 Contact Tracing Outcomes in Washington State, August and October 2020
title_full	COVID-19 Contact Tracing Outcomes in Washington State, August and October 2020
title_fullStr	COVID-19 Contact Tracing Outcomes in Washington State, August and October 2020
title_full_unstemmed	COVID-19 Contact Tracing Outcomes in Washington State, August and October 2020
title_sort	covid-19 contact tracing outcomes in washington state, august and october 2020
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/c0e13a3417024a3385b2e59d18de48fc
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COVID-19 Contact Tracing Outcomes in Washington State, August and October 2020

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