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Mean ± standard error of the mean (SEM) infectious virus titers (median tissue culture infectious dose [TCID50]/mL) in respiratory tract samples from favipiravir and placebo recipients in US316 (A) and US317 (B). The lower limit of quantification (LLOQ) in the TCID50 assay (0.7852, LLOQ = 0.75 TCID50/mL) is indicated by the dashed horizontal line.
