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Enhanced contact investigations for nine early travel-related cases of SARS-CoV-2 in the United States.
Burke, Rachel M; Balter, Sharon; Barnes, Emily; Barry, Vaughn; Bartlett, Karri; Beer, Karlyn D; Benowitz, Isaac; Biggs, Holly M; Bruce, Hollianne; Bryant-Genevier, Jonathan; Cates, Jordan; Chatham-Stephens, Kevin; Chea, Nora; Chiou, Howard; Christiansen, Demian; Chu, Victoria T; Clark, Shauna; Cody, Sara H; Cohen, Max; Conners, Erin E; Dasari, Vishal; Dawson, Patrick; DeSalvo, Traci; Donahue, Matthew; Dratch, Alissa; Duca, Lindsey; Duchin, Jeffrey; Dyal, Jonathan W; Feldstein, Leora R; Fenstersheib, Marty; Fischer, Marc; Fisher, Rebecca; Foo, Chelsea; Freeman-Ponder, Brandi; Fry, Alicia M; Gant, Jessica; Gautom, Romesh; Ghinai, Isaac; Gounder, Prabhu; Grigg, Cheri T; Gunzenhauser, Jeffrey; Hall, Aron J; Han, George S; Haupt, Thomas; Holshue, Michelle; Hunter, Jennifer; Ibrahim, Mireille B; Jacobs, Max W; Jarashow, M Claire; Joshi, Kiran.
  • Burke RM; The COVID-19 Close Contact Investigation Team, United States of America.
  • Balter S; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Barnes E; The COVID-19 Close Contact Investigation Team, United States of America.
  • Barry V; Los Angeles County Department of Public Health, Los Angeles, California, United States of America.
  • Bartlett K; The COVID-19 Close Contact Investigation Team, United States of America.
  • Beer KD; Los Angeles County Department of Public Health, Los Angeles, California, United States of America.
  • Benowitz I; The COVID-19 Close Contact Investigation Team, United States of America.
  • Biggs HM; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Bruce H; The COVID-19 Close Contact Investigation Team, United States of America.
  • Bryant-Genevier J; Public Health Madison & Dane County, Madison, Wisconsin, United States of America.
  • Cates J; The COVID-19 Close Contact Investigation Team, United States of America.
  • Chatham-Stephens K; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Chea N; The COVID-19 Close Contact Investigation Team, United States of America.
  • Chiou H; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Christiansen D; The COVID-19 Close Contact Investigation Team, United States of America.
  • Chu VT; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Clark S; The COVID-19 Close Contact Investigation Team, United States of America.
  • Cody SH; Snohomish Health District, Everett, Washington, United States of America.
  • Cohen M; The COVID-19 Close Contact Investigation Team, United States of America.
  • Conners EE; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Dasari V; The COVID-19 Close Contact Investigation Team, United States of America.
  • Dawson P; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • DeSalvo T; The COVID-19 Close Contact Investigation Team, United States of America.
  • Donahue M; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Dratch A; The COVID-19 Close Contact Investigation Team, United States of America.
  • Duca L; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Duchin J; The COVID-19 Close Contact Investigation Team, United States of America.
  • Dyal JW; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Feldstein LR; Los Angeles County Department of Public Health, Los Angeles, California, United States of America.
  • Fenstersheib M; The COVID-19 Close Contact Investigation Team, United States of America.
  • Fischer M; Cook County Department of Public Health, Oak Forest, Illinois, United States of America.
  • Fisher R; The COVID-19 Close Contact Investigation Team, United States of America.
  • Foo C; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Freeman-Ponder B; The COVID-19 Close Contact Investigation Team, United States of America.
  • Fry AM; Public Health Seattle-King County, Seattle, Washington, United States of America.
  • Gant J; The COVID-19 Close Contact Investigation Team, United States of America.
  • Gautom R; County of Santa Clara, Public Health Department, San Jose, California, United States of America.
  • Ghinai I; The COVID-19 Close Contact Investigation Team, United States of America.
  • Gounder P; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Grigg CT; The COVID-19 Close Contact Investigation Team, United States of America.
  • Gunzenhauser J; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Hall AJ; The COVID-19 Close Contact Investigation Team, United States of America.
  • Han GS; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Haupt T; The COVID-19 Close Contact Investigation Team, United States of America.
  • Holshue M; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Hunter J; The COVID-19 Close Contact Investigation Team, United States of America.
  • Ibrahim MB; Wisconsin Department of Health Services, Madison, Wisconsin, United States of America.
  • Jacobs MW; The COVID-19 Close Contact Investigation Team, United States of America.
  • Jarashow MC; Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
  • Joshi K; The COVID-19 Close Contact Investigation Team, United States of America.
PLoS One ; 15(9): e0238342, 2020.
Article in English | MEDLINE | ID: covidwho-740403
ABSTRACT
Coronavirus disease 2019 (COVID-19), the respiratory disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), was first identified in Wuhan, China and has since become pandemic. In response to the first cases identified in the United States, close contacts of confirmed COVID-19 cases were investigated to enable early identification and isolation of additional cases and to learn more about risk factors for transmission. Close contacts of nine early travel-related cases in the United States were identified and monitored daily for development of symptoms (active monitoring). Selected close contacts (including those with exposures categorized as higher risk) were targeted for collection of additional exposure information and respiratory samples. Respiratory samples were tested for SARS-CoV-2 by real-time reverse transcription polymerase chain reaction at the Centers for Disease Control and Prevention. Four hundred four close contacts were actively monitored in the jurisdictions that managed the travel-related cases. Three hundred thirty-eight of the 404 close contacts provided at least basic exposure information, of whom 159 close contacts had ≥1 set of respiratory samples collected and tested. Across all actively monitored close contacts, two additional symptomatic COVID-19 cases (i.e., secondary cases) were identified; both secondary cases were in spouses of travel-associated case patients. When considering only household members, all of whom had ≥1 respiratory sample tested for SARS-CoV-2, the secondary attack rate (i.e., the number of secondary cases as a proportion of total close contacts) was 13% (95% CI 4-38%). The results from these contact tracing investigations suggest that household members, especially significant others, of COVID-19 cases are at highest risk of becoming infected. The importance of personal protective equipment for healthcare workers is also underlined. Isolation of persons with COVID-19, in combination with quarantine of exposed close contacts and practice of everyday preventive behaviors, is important to mitigate spread of COVID-19.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Pneumonia, Viral / Contact Tracing / Coronavirus Infections Type of study: Diagnostic study / Observational study / Prognostic study Limits: Adolescent / Adult / Aged / Child / Female / Humans / Male / Middle aged / Young adult Country/Region as subject: North America Language: English Journal: PLoS One Journal subject: Science / Medicine Year: 2020 Document Type: Article Affiliation country: Journal.pone.0238342

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Pneumonia, Viral / Contact Tracing / Coronavirus Infections Type of study: Diagnostic study / Observational study / Prognostic study Limits: Adolescent / Adult / Aged / Child / Female / Humans / Male / Middle aged / Young adult Country/Region as subject: North America Language: English Journal: PLoS One Journal subject: Science / Medicine Year: 2020 Document Type: Article Affiliation country: Journal.pone.0238342