Figure 2

(A) Age distributions of all tested individuals; all tests (solid lines and darker boxplots) and positive tests (dashed lines and lighter boxplots). (B) Positivity of the tests (in %) in relation to the age of the tested individuals. Dotted vertical lines show limits for the age categories. (C) Ct distributions of all tests. Dotted vertical line shows threshold used for the test positivity. (D) Ct distributions of all tests. Data is divided according to the age of the individuals. Data in (A–C) represents all tests (black), tests performed in females (red), and tests performed in males (blue). Data in (A, C, D) is shown as density plots supplemented with boxplots.