inclusion criteria: hospitalization within the prior 24 hours for either confirmed (based on pcr or antigen positive test for sars-cov-2) or suspected covid-19 based on 3 criteria (all 3 must be present for suspected cases): fever >38 degrees celsius o2 saturation ≤94 abnormal laboratory marker (at least 1): i. d-dimer ≥1.0 μg /ml ii. crp >2 mg/l iii. ferritin >300 μg /l iv. lymphopenia <1500 cells /m3 patient or legal guardian provides written informed consent

inclusion criteria: hospitalization within the prior 24 hours for either confirmed (based on pcr or antigen positive test for sars-cov-2) or suspected covid-19 based on 3 criteria (all 3 must be present for suspected cases): fever >38 degrees celsius o2 saturation ≤94 abnormal laboratory marker (at least 1): i. d-dimer ≥1.0 μg /ml ii. crp >2 mg/l iii. ferritin >300 μg /l iv. lymphopenia <1500 cells /m3 patient or legal guardian provides written informed consent

inclusion criteria: - hospitalization within the prior 24 hours for either confirmed (based on pcr or antigen positive test for sars-cov-2) or suspected covid-19 based on 3 criteria (all 3 must be present for suspected cases): 1. fever >38 degrees celsius 2. o2 saturation ≤94 3. abnormal laboratory marker (at least 1): i. d-dimer ≥1.0 μg /ml ii. crp >2 mg/l iii. ferritin >300 μg /l iv. lymphopenia <1500 cells /m3 - patient or legal guardian provides written informed consent

inclusion criteria: - hospitalization within the prior 24 hours for either confirmed (based on pcr or antigen positive test for sars-cov-2) or suspected covid-19 based on 3 criteria (all 3 must be present for suspected cases): 1. fever >38 degrees celsius 2. o2 saturation ≤94 3. abnormal laboratory marker (at least 1): i. d-dimer ≥1.0 μg /ml ii. crp >2 mg/l iii. ferritin >300 μg /l iv. lymphopenia <1500 cells /m3 - patient or legal guardian provides written informed consent