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Performance of SARS-CoV-2 rapid antigen test compared with real-time RT-PCR in asymptomatic individuals.
Peña, Mónica; Ampuero, Manuel; Garcés, Carlos; Gaggero, Aldo; García, Patricia; Velasquez, María Soledad; Luza, Ricardo; Alvarez, Pía; Paredes, Fabio; Acevedo, Johanna; Farfán, Mauricio J; Solari, Sandra; Soto-Rifo, Ricardo; Valiente-Echeverría, Fernando.
  • Peña M; Laboratorio de Virología Molecular y Celular, Programa de Virología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Chile.
  • Ampuero M; Laboratorio de Virología Ambiental, Programa de Virología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Chile.
  • Garcés C; Laboratorio Médico Bioclinic, Iquique, Chile.
  • Gaggero A; Laboratorio de Virología Ambiental, Programa de Virología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Chile.
  • García P; Departamento de Laboratorio Clínico, Escuela de Medicina, Pontificia Universidad Católica de Chile, Chile.
  • Velasquez MS; Comité asesor de técnicas de laboratorio de diagnóstico de SARS-CoV-2, Ministerio de Salud de Chile, Chile.
  • Luza R; Unidad de Epidemiología, Seremi de Salud Tarapacá, Chile.
  • Alvarez P; Departamento de Epidemiología, Ministerio de Salud de Chile, Chile.
  • Paredes F; Departamento de Epidemiología, Ministerio de Salud de Chile, Chile.
  • Acevedo J; División de Planificación Sanitaria, DIPLAS, Ministerio de Salud de Chile, Chile.
  • Farfán MJ; Departamento de Pediatría y Cirugía Infantil Oriente, Hospital Dr. Luis Calvo Mackenna, Facultad de Medicina, Universidad de Chile, Chile.
  • Solari S; Departamento de Laboratorio Clínico, Escuela de Medicina, Pontificia Universidad Católica de Chile, Chile.
  • Soto-Rifo R; Laboratorio de Virología Molecular y Celular, Programa de Virología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Chile.
  • Valiente-Echeverría F; Laboratorio de Virología Molecular y Celular, Programa de Virología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Chile. Electronic address: fvaliente@uchile.cl.
Int J Infect Dis ; 107: 201-204, 2021 Jun.
Article in English | MEDLINE | ID: covidwho-1213273
ABSTRACT
Screening, testing and contact tracing plays a pivotal role in control of the COVID-19 pandemic. To enable this it is necessary to increase the testing capacity. This study compared a SARS-CoV-2 rapid antigen test (RAT) and RT-PCR in 842 asymptomatic individuals from Tarapacá, Chile. A sensitivity of 69.86%, specificity of 99.61%, PPV of 94.44% and NPP of 97.22% with Ct values (Ct > 27) that were significantly higher among individuals with false-negative RAT were reported. These results support the fact that RAT might have a significant impact on the identification of asymptomatic carriers in areas that lack suitable laboratories to perform SARS-CoV-2 real-time RT-PCR diagnostics, or the results take more than 24-48 h, as well as zones with high traffic of individuals such as border/customs, airports, interregional bus, train stations or in any mass testing campaign requiring rapid results.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Asymptomatic Infections / COVID-19 Nucleic Acid Testing / COVID-19 Serological Testing / SARS-CoV-2 / COVID-19 Type of study: Diagnostic study Limits: Adult / Female / Humans / Male / Middle aged / Young adult Language: English Journal: Int J Infect Dis Journal subject: Communicable Diseases Year: 2021 Document Type: Article Affiliation country: J.ijid.2021.04.087

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Asymptomatic Infections / COVID-19 Nucleic Acid Testing / COVID-19 Serological Testing / SARS-CoV-2 / COVID-19 Type of study: Diagnostic study Limits: Adult / Female / Humans / Male / Middle aged / Young adult Language: English Journal: Int J Infect Dis Journal subject: Communicable Diseases Year: 2021 Document Type: Article Affiliation country: J.ijid.2021.04.087