Change from baseline in SARS-CoV-2 viral RNA on nasopharyngeal swabs (intention-to-treat)

Box plot of viral load of participants in the control arm (blue box) and the intervention arm (red box) at each assessment point (x-axis), determined by quantitative RT-PCR. Boxes represent median and IQR for each group, outliers are plotted as individual points. The number of samples tested are as follows: day 1, 293; day 3, 271; day 7, 211.