(1) Confirmed patients (or legal guardian) sign a written informed consent form, (2) Aged from 18 to 80 years, male or female, (3) Patients with positive detection of 2019 Novel Coronavirus Pneumonia fluorescence RT-PCR in respiratory specimens or blood samples, (4) Mild ill, severe ill and critical ill patients are grouped based on the fifth edition of the treatment and diagnosis plan published by the National Health Commission of the Peoples Republic of China.

(1) Confirmed patients (or legal guardian) sign a written informed consent form, (2) Aged from 18 to 80 years, male or female, (3) Patients with positive detection of 2019 Novel Coronavirus Pneumonia fluorescence RT-PCR in respiratory specimens or blood samples, (4) Mild ill, severe ill and critical ill patients are grouped based on the fifth edition of the treatment and diagnosis plan published by the National Health Commission of the Peoples Republic of China.