Retrospective quantitative detection of SARS-CoV-2 by digital PCR showing high accuracy for low viral load specimens.
J Infect Dev Ctries
; 16(1): 10-15, 2022 01 31.
Artículo
en Inglés
| MEDLINE | ID: covidwho-1704111
ABSTRACT
INTRODUCTION:
Accurate detection of severe acute respiratory syndrome coronavirus 2 is critical for diagnosis and disease status evaluation of Coronavirus disease 2019. We retrospectively evaluated the infection status and viral load of severe acute respiratory syndrome coronavirus 2 in Nantong city, China, using a quantitative digital polymerase chain reaction and reverse-transcription PCR.METHODOLOGY:
A total of 103 clinical specimens from 31 patients were collected and tested by digital PCR and reverse-transcription PCR.RESULTS:
The overall accuracy of digital PCR was 96.8%, which was higher than the overall accuracy of 87.1% for reverse-transcription PCR. 4 (3.88%) specimens for ORF1ab and 22 (21.36%) specimens for N gene were negative by reverse-transcription PCR but positive by digital PCR. 3 (2.91%, 3/103) specimens of ORF1ab were positive by reverse-transcription PCR but negative by digital PCR. The digital PCR assay exhibited higher sensitivity to measure the N gene than the ORF1ab gene (p < 0.01).CONCLUSIONS:
Our results showed that digital PCR assay provides more reliable detection of Coronavirus disease 2019 than reverse-transcription PCR, especially for low viral load specimens.Palabras clave
Texto completo:
Disponible
Colección:
Bases de datos internacionales
Base de datos:
MEDLINE
Asunto principal:
SARS-CoV-2
/
COVID-19
Tipo de estudio:
Estudios diagnósticos
/
Estudio experimental
/
Estudio observacional
/
Estudio pronóstico
Límite:
Humanos
Idioma:
Inglés
Revista:
J Infect Dev Ctries
Asunto de la revista:
Enfermedades Transmisibles
Año:
2022
Tipo del documento:
Artículo
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