Figure 2.

Distribution of baseline viral loads by assay according to the clinical outcome: A, recovery; B, mortality. Box plots indicate the median (line) and IQR (box). Wilcoxon P values assess differences in medians between disease severity groups, and proportions of samples are shown below each assay's limit of quantification (LOQ; illustrated by size of bottom circle). RNA values below the assay LOQ of 1.79 log₁₀ copies/mL were set as half the LOQ (1.49 log₁₀ copies/mL) when measurements were above the lower limit of detection and one-quarter the LOQ (1.19 log₁₀ copies/mL) when RNA was not detected; nucleocapsid antigen values below the assay LOQ of 3 pg/mL were set as half the LOQ (1.5 pg/mL).