Many studies have shown that re-positive tests for SARS-CoV-2 by RT-PCR in recovered
COVID-19 patients are very common. We aim to conduct this review to summarize the …

Recently, the recurrence of positive SARS-CoV-2 viral RNA in recovered COVID-19 patients
is receiving more attention. Herein we report a cohort study on the follow-up of 182 …

Background The characteristics, significance and potential cause of positive SARS-CoV-2
diagnoses in recovered coronavirus disease 2019 (COVID-19) patients post discharge (re …

Managing recovered COVID-19 patients with recurrent-positive SARS-CoV-2 RNA test
results is challenging. We performed a population-based observational study to characterize …

Abstract Background Molecular detection of Severe Acute Respiratory Syndrome
Coronavirus 2 (SARS-CoV-2) is key in the diagnosis of coronavirus disease 2019 (COVID …

Background Some COVID-19 cases test positive again for SARS-CoV-2 RNA following
negative test results and discharge, raising questions about the meaning of virus detection …

Abstract “Retest Positive” for severe acute respiratory syndrome‐related coronavirus‐2
(SARS‐CoV‐2) from “recovered” coronavirus disease‐19 (COVID‐19) has been reported …

Abstract Since December 2019, COVID-19, the clinical syndrome associated with SARS-
CoV-2 infection, has infected more than 6.2 million people and brought the function of the …

The ongoing outbreak of COVID-19 that began in Wuhan, China, has constituted a Public
Health Emergency of International Concern, with cases confirmed in multiple countries …

Background: Laboratory diagnosis of SARS-CoV-2 infection (the cause of COVID-19) uses
PCR to detect viral RNA (vRNA) in respiratory samples. SARS-CoV-2 RNA has also been …