Figure 2.

Severe acute respiratory syndrome coronavirus 2 culture results across age groups and viral load. A and B, Samples with observable cytopathic effect (CPE) (culture positive [+], n = 31) or without observable CPE (culture negative [-], n = 95) plotted against viral load (A) and participant age (B) and compared using t test. C and D, Semiquantitative viral titer expressed as median tissue culture infectious dose (TCID₅₀)/mL for culture-positive samples plotted against corresponding viral load (C) or participant age (D). Analyzed using Pearson correlation. Dotted line depicts limit of detection. ∗∗∗∗P < .0001.