 This study found that the clearance of 2019 N-CoV-INA from different samples of patients with COVID-19 varies significantly. Patients with positive fecal viral INA test results have a longer duration of viral INA detection than those with negative results. Additionally, the clearance of viral INA in patient stools is slower than that in their oropharyngeal swabs. Furthermore, the duration of viral INA detection in the glucocorticoid treatment group is longer than that in the non-glucocorticoid treatment group. Therefore, it is important to identify viral INA in feces during convalescence. This article was authored by Yun Ling, Shui Baoshu, Yixiao Lin, and others.