Figure 2.

Time trends of viral loads for the E and RdRp genes in upper and lower respiratory tract specimens from all patients.

Red numbers indicate the time point in days (95% confidence interval) of the spline curve peak to the lowest cycle threshold value (inversely related to the highest viral load). Blue numbers indicate the time point when the viral load shows no further significant decrease. For data consistency, only real-time polymerase chain reaction assays performed up to 14 June 2020 using the same type of test kit were included.