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Failed detection of the full-length genome of SARS-CoV-2 by ultra-deep sequencing from the recovered and discharged patients retested viral PCR positive

By Fengyu Hu, Fengjuan Chen, Yaping Wang, Teng Xu, Xiaoping Tang, Feng Li

Posted 30 Mar 2020
medRxiv DOI: 10.1101/2020.03.27.20043299

Over 10 percent of recovered and discharged patients retested positive for SARS-CoV-2, raising a public health concern whether they could be potential origins of infection. In this study, we found that detectable viral genome in discharged patients might only mean the presence of viral fragments, and could hardly form an infection origin for its extremely low concentration.

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