COVID19 confirmed case (with nasal or oral swab RT-PCR or rapid antigen positive). <br/ >Chest radiograph suggestive of pneumonia. <br/ >Severity scale according to WHO ordinal scale score of either 4 or 5 or 6 (oxygen requirement or HFNC requirement or NIV requirement or invasive mechanical ventilation). <br/ >Able to and willing to provide informed consent. <br/ >

COVID19 confirmed case (with nasal or oral swab RT-PCR or rapid antigen positive). <br/ >Chest radiograph suggestive of pneumonia. <br/ >Severity scale according to WHO ordinal scale score of either 4 or 5 or 6 (oxygen requirement or HFNC requirement or NIV requirement or invasive mechanical ventilation). <br/ >Able to and willing to provide informed consent. <br/ >

COVID19 confirmed case (with nasal or oral swab RT-PCR or rapid antigen positive). <br/ >Chest radiograph suggestive of pneumonia. <br/ >Severity scale according to WHO ordinal scale score of either 4 or 5 or 6 (oxygen requirement or HFNC requirement or NIV requirement or invasive mechanical ventilation). <br/ >Able to and willing to provide informed consent. <br/ >

COVID19 confirmed case (with nasal or oral swab RT-PCR or rapid antigen positive). <br/ >Chest radiograph suggestive of pneumonia. <br/ >Severity scale according to WHO ordinal scale score of either 4 or 5 or 6 (oxygen requirement or HFNC requirement or NIV requirement or invasive mechanical ventilation). <br/ >Able to and willing to provide informed consent. <br/ >