inclusion criteria: - male and female, 18-75 years old - patients previously diagnosed with novel coronavirus pneumonia: the course of illness is no more than 14 days; if the course of the disease was more than 14 days, patient meets one of the following conditions can also be included in the group: (1) no apparent absorption or progression of chest radiograph was observed within 7 days; (2) respiratory symptoms (chest tightness, or cough, or breathing difficulties); (3) test for viral nucleic acid positive within 3 days. - informed consent should be signed by the participate or an authorized agent - agree to clinical samples collection - female or male subjects of childbearing age agree to take effective contraceptive measures within 3 months of the last oral medication to ensure that female or male partners of childbearing age do not become pregnant

inclusion criteria: - male and female, 18-75 years old - patients previously diagnosed with novel coronavirus pneumonia: the course of illness is no more than 14 days; if the course of the disease was more than 14 days, patient meets one of the following conditions can also be included in the group: (1) no apparent absorption or progression of chest radiograph was observed within 7 days; (2) respiratory symptoms (chest tightness, or cough, or breathing difficulties); (3) test for viral nucleic acid positive within 3 days. - informed consent should be signed by the participate or an authorized agent - agree to clinical samples collection - female or male subjects of childbearing age agree to take effective contraceptive measures within 3 months of the last oral medication to ensure that female or male partners of childbearing age do not become pregnant