inclusion criteria: * age 18 years or older * currently admitted to hospital * there is a positive sample for covid-19 within the past 14 days. the sample can be a nasal or pharyngeal swab, sputum, tracheal aspirate, bronchoalveolar lavage, or another sample from the patient * requiring oxygenation according to the modified ordinal clinical scale 4-5

inclusion criteria: * age 18 years or older * currently admitted to hospital * there is a positive sample for covid-19 within the past 14 days. the sample can be a nasal or pharyngeal swab, sputum, tracheal aspirate, bronchoalveolar lavage, or another sample from the patient * requiring oxygenation according to the modified ordinal clinical scale 4-5

inclusion criteria: age 18 years or older currently admitted to hospital there is a positive sample for covid-19 within the past 14 days. the sample can be a nasal or pharyngeal swab, sputum, tracheal aspirate, bronchoalveolar lavage, or another sample from the patient requiring oxygenation according to the modified ordinal clinical scale 4-5

inclusion criteria: age 18 years or older currently admitted to hospital there is a positive sample for covid-19 within the past 14 days. the sample can be a nasal or pharyngeal swab, sputum, tracheal aspirate, bronchoalveolar lavage, or another sample from the patient requiring oxygenation according to the modified ordinal clinical scale 4-5

inclusion criteria: age 18 years or older currently admitted to hospital there is a positive sample for covid-19 within the past 21 days. the sample can be a nasal or pharyngeal swab, sputum, tracheal aspirate, bronchoalveolar lavage, or another sample from the patient modified ordinal clinical scale 4-5

inclusion criteria: age 18 years or older currently admitted to hospital there is a positive sample for covid-19 within the past 21 days. the sample can be a nasal or pharyngeal swab, sputum, tracheal aspirate, bronchoalveolar lavage, or another sample from the patient modified ordinal clinical scale 4-5