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Peña M, Ampuero M, Garcés C, Gaggero A, García P, Velasquez MS, Luza R, Alvarez P, Paredes F, Acevedo J, Farfán MJ, Solari S, Soto-Rifo R, Valiente-Echeverría F. Performance of SARS-CoV-2 rapid antigen test compared with real-time RT-PCR in asymptomatic individuals. Int J Infect Dis 2021; 107:201-204. [PMID: 33945868 PMCID: PMC8088036 DOI: 10.1016/j.ijid.2021.04.087] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/15/2021] [Accepted: 04/29/2021] [Indexed: 12/13/2022] Open
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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Affiliation(s)
- Mónica Peña
- Laboratorio de Virología Molecular y Celular, Programa de Virología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Chile
| | - Manuel Ampuero
- Laboratorio de Virología Ambiental, Programa de Virología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Chile
| | | | - Aldo Gaggero
- Laboratorio de Virología Ambiental, Programa de Virología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Chile
| | - Patricia García
- Departamento de Laboratorio Clínico, Escuela de Medicina, Pontificia Universidad Católica de Chile, Chile
| | - María Soledad Velasquez
- Comité asesor de técnicas de laboratorio de diagnóstico de SARS-CoV-2, Ministerio de Salud de Chile, Chile
| | - Ricardo Luza
- Unidad de Epidemiología, Seremi de Salud Tarapacá, Chile
| | - Pía Alvarez
- Departamento de Epidemiología, Ministerio de Salud de Chile, Chile
| | - Fabio Paredes
- Departamento de Epidemiología, Ministerio de Salud de Chile, Chile
| | - Johanna Acevedo
- División de Planificación Sanitaria, DIPLAS, Ministerio de Salud de Chile, Chile
| | - Mauricio J Farfán
- Departamento de Pediatría y Cirugía Infantil Oriente, Hospital Dr. Luis Calvo Mackenna, Facultad de Medicina, Universidad de Chile, Chile
| | - Sandra Solari
- Departamento de Laboratorio Clínico, Escuela de Medicina, Pontificia Universidad Católica de Chile, Chile
| | - Ricardo Soto-Rifo
- Laboratorio de Virología Molecular y Celular, Programa de Virología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Chile
| | - Fernando Valiente-Echeverría
- Laboratorio de Virología Molecular y Celular, Programa de Virología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Chile.
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