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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/218195
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/218195
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling 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 Técnicas2025-10-22T11:01:26Zoai: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:34982025-10-22 11:01:26.739CONICET 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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