Viral kinetics of SARS-CoV-2 in asymptomatic carriers and presymptomatic patients kimse2020viral

The authors measured SARS-CoV-2 in longitudinal oropharyngeal swab samples collected from 71 COVID-19 patients between February 4 and April 7, 2020.

Analytes

oropharyngealswab_SARSCoV2_symptomatic

SARS-CoV-2 RNA genome copy concentration in oropharyngeal swab samples. Ct = 35 is the cut-off for a positive result and Ct = 40 is a negative sample; Ct = 40 was the limit of detection.

Biomarker: SARS-CoV-2
Specimen: oropharyngeal swab
Units: cycle threshold
Gene target: RdRp
Participants: 3
Negative samples: 5
Positive samples (not quantifiable): 0
Quantifiable samples: 16
Limit of quantification: unknown
Limit of detection: 40

oropharyngealswab_SARSCoV2_asymptomatic

SARS-CoV-2 RNA genome copy concentration in oropharyngeal swab samples.Ct = 35 is the cut-off for a positive result and Ct = 40 is a negative sample; Ct = 40 was the limit of detection.

Biomarker: SARS-CoV-2
Specimen: oropharyngeal swab
Units: cycle threshold
Gene target: RdRp
Participants: 10
Negative samples: 18
Positive samples (not quantifiable): 0
Quantifiable samples: 22
Limit of quantification: unknown
Limit of detection: 40