Point-of-care detection of SARS-CoV-2 antigen among symptomatic vs. asymptomatic persons: Testing for COVID-19 vs. infectivity
- Autores
- Neukam, Karin; Lucero, Alicia; Gutiérrez Valencia, Alicia; Amaya, Lucas; Echegoyen, Natalia; Martelli, Antonella; Videla, Cristina Mónica; Di Lello, Federico Alejandro; Martínez, Alfredo P.
- Año de publicación
- 2022
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Background: Management of the coronavirus disease 2019 (COVID-19) pandemic caused by a novel severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) requires rapid and simple methods to detect COVID-19 patients and identify potential infectors. This study aimed to evaluate the utility of a point-of-care (PoC) rapid antigen diagnostic test (Ag-RDT) in these settings. Patients and methods: Individuals who consecutively presented for SARS-CoV-2 testing at a tertiary care center in Buenos Aires, Argentina, underwent PoC Ag-RDT testing and real-time RT-PCR (qRT-PCR) on the same day during June 2021. Results: Of 584 included subjects, 108 (18.5%) were symptomatic for COVID-19 while the remaining presented for miscellaneous reasons unrelated to possible or confirmed contact with a SARS-CoV-2-infected individual. A positive Ag-RDT result was obtained in 26 (24.1%) symptomatic and 7 (1.5%) asymptomatic persons (p < 0.001), which was concordant with qRT-PCR in 105/108 [97.2%, Cohen's kappa coefficient (κ) = 0.927] symptomatic and 467/476 (98.1% κ = 0.563) asymptomatic participants, with a positive percentage agreement (PPA; 95% confidence interval) of 89.7% (71.5–97.3%) and 42.9% (18.8–70.4%), respectively. None of the 11 false-negative diagnoses showed a Ct-value ≤20. Considering only failures with a Ct-value below 31 as hypothetical infectivity threshold of 105 SARS-CoV-2 RNA copies/mL, concordance was observed in 98.1% (κ = 0.746) in the asymptomatic population, accounting for a PPA of 66.7% (30.9–91%). Conclusions: PoC Ag-RDT accurately detected active SARS-CoV-2 infection and showed acceptable diagnostic performance in asymptomatic persons potentially spreading infectious virus. Ag-RDT may therefore be useful to slow down or stop transmission by enabling adequate decisions on isolation at a public health level.
Fil: Neukam, Karin. Hospital Universitario Virgen del Rocío; España. Universidad de Sevilla; España
Fil: Lucero, Alicia. Centro de Educación Medica E Invest.clinicas; Argentina
Fil: Gutiérrez Valencia, Alicia. Universidad de Sevilla; España. Hospital Universitario Virgen del Rocío; España
Fil: Amaya, Lucas. Centro de Educación Medica E Invest.clinicas; Argentina
Fil: Echegoyen, Natalia. Centro de Educación Medica E Invest.clinicas; Argentina
Fil: Martelli, Antonella. Centro de Educación Medica E Invest.clinicas; Argentina
Fil: Videla, Cristina Mónica. Universidad de Buenos Aires. Facultad de Farmacia y BioquÍmica. Instituto de Investigaciones En Bacteriología y Virología Molecular (IBaViM); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centro de Educación Medica E Invest.clinicas; Argentina
Fil: Di Lello, Federico Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y BioquÍmica. Instituto de Investigaciones En Bacteriología y Virología Molecular (IBaViM); Argentina
Fil: Martínez, Alfredo P.. Centro de Educación Medica E Invest.clinicas; Argentina - Materia
-
SARS-CoV-2
COVID-19
Point-of-care
rapid antigen testing
PCR
Public health
viral kinetics
surveillance - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/218195
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Point-of-care detection of SARS-CoV-2 antigen among symptomatic vs. asymptomatic persons: Testing for COVID-19 vs. infectivityNeukam, KarinLucero, AliciaGutiérrez Valencia, AliciaAmaya, LucasEchegoyen, NataliaMartelli, AntonellaVidela, Cristina MónicaDi Lello, Federico AlejandroMartínez, Alfredo P.SARS-CoV-2COVID-19Point-of-carerapid antigen testingPCRPublic healthviral kineticssurveillancehttps://purl.org/becyt/ford/3.3https://purl.org/becyt/ford/3Background: Management of the coronavirus disease 2019 (COVID-19) pandemic caused by a novel severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) requires rapid and simple methods to detect COVID-19 patients and identify potential infectors. This study aimed to evaluate the utility of a point-of-care (PoC) rapid antigen diagnostic test (Ag-RDT) in these settings. Patients and methods: Individuals who consecutively presented for SARS-CoV-2 testing at a tertiary care center in Buenos Aires, Argentina, underwent PoC Ag-RDT testing and real-time RT-PCR (qRT-PCR) on the same day during June 2021. Results: Of 584 included subjects, 108 (18.5%) were symptomatic for COVID-19 while the remaining presented for miscellaneous reasons unrelated to possible or confirmed contact with a SARS-CoV-2-infected individual. A positive Ag-RDT result was obtained in 26 (24.1%) symptomatic and 7 (1.5%) asymptomatic persons (p < 0.001), which was concordant with qRT-PCR in 105/108 [97.2%, Cohen's kappa coefficient (κ) = 0.927] symptomatic and 467/476 (98.1% κ = 0.563) asymptomatic participants, with a positive percentage agreement (PPA; 95% confidence interval) of 89.7% (71.5–97.3%) and 42.9% (18.8–70.4%), respectively. None of the 11 false-negative diagnoses showed a Ct-value ≤20. Considering only failures with a Ct-value below 31 as hypothetical infectivity threshold of 105 SARS-CoV-2 RNA copies/mL, concordance was observed in 98.1% (κ = 0.746) in the asymptomatic population, accounting for a PPA of 66.7% (30.9–91%). Conclusions: PoC Ag-RDT accurately detected active SARS-CoV-2 infection and showed acceptable diagnostic performance in asymptomatic persons potentially spreading infectious virus. Ag-RDT may therefore be useful to slow down or stop transmission by enabling adequate decisions on isolation at a public health level.Fil: Neukam, Karin. Hospital Universitario Virgen del Rocío; España. Universidad de Sevilla; EspañaFil: Lucero, Alicia. Centro de Educación Medica E Invest.clinicas; ArgentinaFil: Gutiérrez Valencia, Alicia. Universidad de Sevilla; España. Hospital Universitario Virgen del Rocío; EspañaFil: Amaya, Lucas. Centro de Educación Medica E Invest.clinicas; ArgentinaFil: Echegoyen, Natalia. Centro de Educación Medica E Invest.clinicas; ArgentinaFil: Martelli, Antonella. Centro de Educación Medica E Invest.clinicas; ArgentinaFil: Videla, Cristina Mónica. Universidad de Buenos Aires. Facultad de Farmacia y BioquÍmica. Instituto de Investigaciones En Bacteriología y Virología Molecular (IBaViM); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centro de Educación Medica E Invest.clinicas; ArgentinaFil: Di Lello, Federico Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y BioquÍmica. Instituto de Investigaciones En Bacteriología y Virología Molecular (IBaViM); ArgentinaFil: Martínez, Alfredo P.. Centro de Educación Medica E Invest.clinicas; ArgentinaFrontiers Media2022-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/218195Neukam, Karin; Lucero, Alicia; Gutiérrez Valencia, Alicia; Amaya, Lucas; Echegoyen, Natalia; et al.; Point-of-care detection of SARS-CoV-2 antigen among symptomatic vs. asymptomatic persons: Testing for COVID-19 vs. infectivity; Frontiers Media; Frontiers in Public Health; 10; 10-2022; 1-82296-2565CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/fpubh.2022.995249/fullinfo:eu-repo/semantics/altIdentifier/doi/10.3389/fpubh.2022.995249info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:33:25Zoai:ri.conicet.gov.ar:11336/218195instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:33:25.551CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Point-of-care detection of SARS-CoV-2 antigen among symptomatic vs. asymptomatic persons: Testing for COVID-19 vs. infectivity |
title |
Point-of-care detection of SARS-CoV-2 antigen among symptomatic vs. asymptomatic persons: Testing for COVID-19 vs. infectivity |
spellingShingle |
Point-of-care detection of SARS-CoV-2 antigen among symptomatic vs. asymptomatic persons: Testing for COVID-19 vs. infectivity Neukam, Karin SARS-CoV-2 COVID-19 Point-of-care rapid antigen testing PCR Public health viral kinetics surveillance |
title_short |
Point-of-care detection of SARS-CoV-2 antigen among symptomatic vs. asymptomatic persons: Testing for COVID-19 vs. infectivity |
title_full |
Point-of-care detection of SARS-CoV-2 antigen among symptomatic vs. asymptomatic persons: Testing for COVID-19 vs. infectivity |
title_fullStr |
Point-of-care detection of SARS-CoV-2 antigen among symptomatic vs. asymptomatic persons: Testing for COVID-19 vs. infectivity |
title_full_unstemmed |
Point-of-care detection of SARS-CoV-2 antigen among symptomatic vs. asymptomatic persons: Testing for COVID-19 vs. infectivity |
title_sort |
Point-of-care detection of SARS-CoV-2 antigen among symptomatic vs. asymptomatic persons: Testing for COVID-19 vs. infectivity |
dc.creator.none.fl_str_mv |
Neukam, Karin Lucero, Alicia Gutiérrez Valencia, Alicia Amaya, Lucas Echegoyen, Natalia Martelli, Antonella Videla, Cristina Mónica Di Lello, Federico Alejandro Martínez, Alfredo P. |
author |
Neukam, Karin |
author_facet |
Neukam, Karin Lucero, Alicia Gutiérrez Valencia, Alicia Amaya, Lucas Echegoyen, Natalia Martelli, Antonella Videla, Cristina Mónica Di Lello, Federico Alejandro Martínez, Alfredo P. |
author_role |
author |
author2 |
Lucero, Alicia Gutiérrez Valencia, Alicia Amaya, Lucas Echegoyen, Natalia Martelli, Antonella Videla, Cristina Mónica Di Lello, Federico Alejandro Martínez, Alfredo P. |
author2_role |
author author author author author author author author |
dc.subject.none.fl_str_mv |
SARS-CoV-2 COVID-19 Point-of-care rapid antigen testing PCR Public health viral kinetics surveillance |
topic |
SARS-CoV-2 COVID-19 Point-of-care rapid antigen testing PCR Public health viral kinetics surveillance |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/3.3 https://purl.org/becyt/ford/3 |
dc.description.none.fl_txt_mv |
Background: Management of the coronavirus disease 2019 (COVID-19) pandemic caused by a novel severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) requires rapid and simple methods to detect COVID-19 patients and identify potential infectors. This study aimed to evaluate the utility of a point-of-care (PoC) rapid antigen diagnostic test (Ag-RDT) in these settings. Patients and methods: Individuals who consecutively presented for SARS-CoV-2 testing at a tertiary care center in Buenos Aires, Argentina, underwent PoC Ag-RDT testing and real-time RT-PCR (qRT-PCR) on the same day during June 2021. Results: Of 584 included subjects, 108 (18.5%) were symptomatic for COVID-19 while the remaining presented for miscellaneous reasons unrelated to possible or confirmed contact with a SARS-CoV-2-infected individual. A positive Ag-RDT result was obtained in 26 (24.1%) symptomatic and 7 (1.5%) asymptomatic persons (p < 0.001), which was concordant with qRT-PCR in 105/108 [97.2%, Cohen's kappa coefficient (κ) = 0.927] symptomatic and 467/476 (98.1% κ = 0.563) asymptomatic participants, with a positive percentage agreement (PPA; 95% confidence interval) of 89.7% (71.5–97.3%) and 42.9% (18.8–70.4%), respectively. None of the 11 false-negative diagnoses showed a Ct-value ≤20. Considering only failures with a Ct-value below 31 as hypothetical infectivity threshold of 105 SARS-CoV-2 RNA copies/mL, concordance was observed in 98.1% (κ = 0.746) in the asymptomatic population, accounting for a PPA of 66.7% (30.9–91%). Conclusions: PoC Ag-RDT accurately detected active SARS-CoV-2 infection and showed acceptable diagnostic performance in asymptomatic persons potentially spreading infectious virus. Ag-RDT may therefore be useful to slow down or stop transmission by enabling adequate decisions on isolation at a public health level. Fil: Neukam, Karin. Hospital Universitario Virgen del Rocío; España. Universidad de Sevilla; España Fil: Lucero, Alicia. Centro de Educación Medica E Invest.clinicas; Argentina Fil: Gutiérrez Valencia, Alicia. Universidad de Sevilla; España. Hospital Universitario Virgen del Rocío; España Fil: Amaya, Lucas. Centro de Educación Medica E Invest.clinicas; Argentina Fil: Echegoyen, Natalia. Centro de Educación Medica E Invest.clinicas; Argentina Fil: Martelli, Antonella. Centro de Educación Medica E Invest.clinicas; Argentina Fil: Videla, Cristina Mónica. Universidad de Buenos Aires. Facultad de Farmacia y BioquÍmica. Instituto de Investigaciones En Bacteriología y Virología Molecular (IBaViM); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Centro de Educación Medica E Invest.clinicas; Argentina Fil: Di Lello, Federico Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y BioquÍmica. Instituto de Investigaciones En Bacteriología y Virología Molecular (IBaViM); Argentina Fil: Martínez, Alfredo P.. Centro de Educación Medica E Invest.clinicas; Argentina |
description |
Background: Management of the coronavirus disease 2019 (COVID-19) pandemic caused by a novel severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) requires rapid and simple methods to detect COVID-19 patients and identify potential infectors. This study aimed to evaluate the utility of a point-of-care (PoC) rapid antigen diagnostic test (Ag-RDT) in these settings. Patients and methods: Individuals who consecutively presented for SARS-CoV-2 testing at a tertiary care center in Buenos Aires, Argentina, underwent PoC Ag-RDT testing and real-time RT-PCR (qRT-PCR) on the same day during June 2021. Results: Of 584 included subjects, 108 (18.5%) were symptomatic for COVID-19 while the remaining presented for miscellaneous reasons unrelated to possible or confirmed contact with a SARS-CoV-2-infected individual. A positive Ag-RDT result was obtained in 26 (24.1%) symptomatic and 7 (1.5%) asymptomatic persons (p < 0.001), which was concordant with qRT-PCR in 105/108 [97.2%, Cohen's kappa coefficient (κ) = 0.927] symptomatic and 467/476 (98.1% κ = 0.563) asymptomatic participants, with a positive percentage agreement (PPA; 95% confidence interval) of 89.7% (71.5–97.3%) and 42.9% (18.8–70.4%), respectively. None of the 11 false-negative diagnoses showed a Ct-value ≤20. Considering only failures with a Ct-value below 31 as hypothetical infectivity threshold of 105 SARS-CoV-2 RNA copies/mL, concordance was observed in 98.1% (κ = 0.746) in the asymptomatic population, accounting for a PPA of 66.7% (30.9–91%). Conclusions: PoC Ag-RDT accurately detected active SARS-CoV-2 infection and showed acceptable diagnostic performance in asymptomatic persons potentially spreading infectious virus. Ag-RDT may therefore be useful to slow down or stop transmission by enabling adequate decisions on isolation at a public health level. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-10 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/218195 Neukam, Karin; Lucero, Alicia; Gutiérrez Valencia, Alicia; Amaya, Lucas; Echegoyen, Natalia; et al.; Point-of-care detection of SARS-CoV-2 antigen among symptomatic vs. asymptomatic persons: Testing for COVID-19 vs. infectivity; Frontiers Media; Frontiers in Public Health; 10; 10-2022; 1-8 2296-2565 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/218195 |
identifier_str_mv |
Neukam, Karin; Lucero, Alicia; Gutiérrez Valencia, Alicia; Amaya, Lucas; Echegoyen, Natalia; et al.; Point-of-care detection of SARS-CoV-2 antigen among symptomatic vs. asymptomatic persons: Testing for COVID-19 vs. infectivity; Frontiers Media; Frontiers in Public Health; 10; 10-2022; 1-8 2296-2565 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/fpubh.2022.995249/full info:eu-repo/semantics/altIdentifier/doi/10.3389/fpubh.2022.995249 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Frontiers Media |
publisher.none.fl_str_mv |
Frontiers Media |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.070432 |