The median age was 42 years old (IQR, 35 to 54). The percentage of female gender (54%, 80/147) was slightly higher than that of male gender (46%, 67/147). The median duration of viral shedding in the current study was 17 days (IQR, 12 to 21). The shortest and longest durations were 6 days and 47 days, respectively. It was noted that the proportion declined to 50% about 17 days after symptoms onset. Based on the median as the cut-off point, the study population were further divided into two groups with duration of viral shedding of more than 17 days (n=65) and less than 17 days (n=82). The prolonged duration of viral shedding was defined as the duration more than 17 days.