학술논문
Occurrence and Timing of Subsequent Severe Acute Respiratory Syndrome Coronavirus 2 Reverse-transcription Polymerase Chain Reaction Positivity Among Initially Negative Patients.
Document Type
Article
Author
Source
Subject
*COVID-19 testing
*POLYMERASE chain reaction
*REVERSE transcriptase polymerase chain reaction
*DESCRIPTIVE statistics
*COVID-19
*SARS-CoV-2
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Language
ISSN
1058-4838
Abstract
Using data for 20 912 patients from 2 large academic health systems, we analyzed the frequency of severe acute respiratory syndrome coronavirus 2 reverse-transcription polymerase chain reaction test discordance among individuals initially testing negative by nasopharyngeal swab who were retested on clinical grounds within 7 days. The frequency of subsequent positivity within this window was 3.5% and was similar across institutions. [ABSTRACT FROM AUTHOR]