Figure 2. Viral Load in Participants with Asymptomatic and Symptomatic Infection.

Panel A shows the peak viral load according to symptom status. Data points represent individual participants. Panel B shows the viral load at the first positive reverse-transcriptase–quantitative polymerase-chain-reaction (RT-qPCR) test in all participants. Panel C shows the viral load at the first positive RT-qPCR test in all infected participants, according to symptom status. The boxes represent interquartile ranges, with the horizontal line in each box representing the median and the whiskers showing the values that were 1.5 times the values represented at each end of the box. The large diamonds in the boxes represent the mean.