inclusion criteria: respiratory specimen is positive for sars-cov-2 nucleic acid by rt-pcr fever: temperature >37.8℃ moderate lung disease, defined by the following respiratory variables (meets one of the following criteria): lung infiltrates (evident by chest x-ray) not attributable to other causes plus one of the following: respiratory rate: rr ≥25 breaths/min oxygen saturation ≤94 % at rest on room air hbsag negative, hcv negative; hiv negative informed consent -

inclusion criteria: respiratory specimen is positive for sars-cov-2 nucleic acid by rt-pcr fever: temperature >37.8℃ moderate lung disease, defined by the following respiratory variables (meets one of the following criteria): lung infiltrates (evident by chest x-ray) not attributable to other causes plus one of the following: respiratory rate: rr ≥25 breaths/min oxygen saturation ≤94 % at rest on room air hbsag negative, hcv negative; hiv negative informed consent -

inclusion criteria: 1. respiratory specimen is positive for sars-cov-2 nucleic acid by rt-pcr 2. fever: temperature >37.8℃ 3. moderate lung disease, defined by the following respiratory variables (meets one of the following criteria): lung infiltrates (evident by chest x-ray) not attributable to other causes plus one of the following: - respiratory rate: rr ≥25 breaths/min - oxygen saturation ≤94 % at rest on room air 4. hbsag negative, hcv negative; hiv negative 5. informed consent -

inclusion criteria: 1. respiratory specimen is positive for sars-cov-2 nucleic acid by rt-pcr 2. fever: temperature >37.8℃ 3. moderate lung disease, defined by the following respiratory variables (meets one of the following criteria): lung infiltrates (evident by chest x-ray) not attributable to other causes plus one of the following: - respiratory rate: rr ≥25 breaths/min - oxygen saturation ≤94 % at rest on room air 4. hbsag negative, hcv negative; hiv negative 5. informed consent -