The Innovation (May 2021)

Phylogenomic tracing of asymptomatic transmission in a COVID-19 outbreak

  • Ju Zhang,
  • Nan Ding,
  • Yangzi Song,
  • Rui Song,
  • Yang Pan,
  • Linghang Wang,
  • Shuo Yan,
  • Qi Wang,
  • Shanfang Ma,
  • Lirong Wei,
  • Fengting Yu,
  • Lianhe Lu,
  • Fujie Zhang,
  • Chen Chen,
  • Hui Zeng

Journal volume & issue
Vol. 2, no. 2
p. 100099

Abstract

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SARS-CoV-2 has caused over 100 million deaths and continues to spread rapidly around the world. Asymptomatic transmission of SARS-CoV-2 is the Achilles’ heel of COVID-19 public health control measures. Phylogenomic data on SARS-CoV-2 could provide more direct information about asymptomatic transmission. In this study, using a novel MINERVA sequencing technology, we traced asymptomatic transmission of COVID-19 patients in Beijing, China. One hundred and seventy-eight close contacts were quarantined, and 14 COVID-19 patients were laboratory confirmed by RT-PCR. We provide direct phylogenomic evidence of asymptomatic transmission by constructing the median joining network in the cluster. These data could help us to determine whether the current symptom-based screening should cover asymptomatic persons.

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