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Asymptomatic COVID-19 Adult Outpatients identified as Significant Viable SARS-CoV-2 Shedders.


ABSTRACT: Differential kinetics of RNA loads and infectious viral levels in the upper respiratory tract between asymptomatic and symptomatic SARS-CoV-2 infected adult outpatients remain unclear limiting recommendations that may guide clinical management, infection control measures and occupational health decisions. In the present investigation, 496 (2.8%) of 17,911 French adult outpatients were positive for an upper respiratory tract SARS-CoV-2 RNA detection by a quantitative RT-PCR assay, of which 180 (36.3%) were COVID-19 asymptomatic. Of these adult asymptomatic viral shedders, 75% had mean to high RNA viral loads (Ct values < 30) which median value was significantly higher than that observed in symptomatic subjects (P = 0.029), and 50.6% were positive by cell culture assays of their upper respiratory tract specimens. Our findings indicate that COVID-19 asymptomatic adult outpatients are significant viable SARS-CoV-2 shedders in their upper respiratory tract playing a major potential role as SARS-CoV-2 transmitters in various epidemiological transmission chains, promoting COVID-19 resurgence in populations.

SUBMITTER: Glenet M 

PROVIDER: S-EPMC8523690 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature

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Asymptomatic COVID-19 Adult Outpatients identified as Significant Viable SARS-CoV-2 Shedders.

Glenet Marie M   Lebreil Anne-Laure AL   Heng Laetitia L   N'Guyen Yohan Y   Meyer Ittah I   Andreoletti Laurent L  

Scientific reports 20211018 1


Differential kinetics of RNA loads and infectious viral levels in the upper respiratory tract between asymptomatic and symptomatic SARS-CoV-2 infected adult outpatients remain unclear limiting recommendations that may guide clinical management, infection control measures and occupational health decisions. In the present investigation, 496 (2.8%) of 17,911 French adult outpatients were positive for an upper respiratory tract SARS-CoV-2 RNA detection by a quantitative RT-PCR assay, of which 180 (3  ...[more]

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