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Abstract

Severe acute respiratory syndrome coronavirus 2 viral load in the upper respiratory tract peaks around symptom onset and infectious virus persists for 10 days in mild-to-moderate coronavirus disease (n = 324 samples analysed). RT-PCR cycle threshold (Ct) values correlate strongly with cultivable virus. Probability of culturing virus declines to 8% in samples with Ct > 35 and to 6% 10 days after onset; it is similar in asymptomatic and symptomatic persons. Asymptomatic persons represent a source of transmissible virus.

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/content/10.2807/1560-7917.ES.2020.25.32.2001483
2020-08-13
2024-10-15
http://instance.metastore.ingenta.com/content/10.2807/1560-7917.ES.2020.25.32.2001483
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