Figure 2

Viraemia by NS1 status in DENV-1 infected patients samples at 3 and 4 days after illness onset. Shown is the median (interquartile range, 95% range of data, and outliers) viraemia level in NS1 positive and NS1 negative patients with the same illness duration (3 and 4 days) tested by A) Bio-Rad NS1 test or B) SD Duo test. The limit of detection of the assay is shown with a dashed line. Viraemia levels were significantly higher in NS1 positive patients relative to NS1 negative patients (t-test) at day 3 of illness.