inclusion criteria: each participant must meet all of the following inclusion criteria to participate in this study: 1. ≥ 18 years of age 2. has laboratory-confirmed sars-cov-2 infection as determined by pcr, or other commercial or public health assay in any specimen, within 14 days prior to randomization. 3. hospitalized at a participating centre 4. primary reason for hospitalization or subsequent in-hospital illness is because of acute covid19 infection 5. first admission for acute covid19 in addition, there will be the below intervention-specific inclusion: randomization who will have no other specific inclusion criteria. randomization lsalt will have no other specific inclusion criteria. randomization dex will have the following specific inclusion criteria 1. on 10 days of steroid course and 2. receiving any supplemental oxygen for 10 days

inclusion criteria: each participant must meet all of the following inclusion criteria to participate in this study: 1. ≥ 18 years of age 2. has laboratory-confirmed sars-cov-2 infection as determined by pcr, or other commercial or public health assay in any specimen, within 14 days prior to randomization. 3. hospitalized at a participating centre 4. primary reason for hospitalization or subsequent in-hospital illness is because of acute covid19 infection 5. first admission for acute covid19 in addition, there will be the below intervention-specific inclusion: randomization who will have no other specific inclusion criteria. randomization lsalt will have no other specific inclusion criteria. randomization dex will have the following specific inclusion criteria 1. on 10 days of steroid course and 2. receiving any supplemental oxygen for 10 days

inclusion criteria: each participant must meet all of the following inclusion criteria to participate in this study: ≥ 18 years of age has laboratory-confirmed sars-cov-2 infection as determined by pcr, or other commercial or public health assay in any specimen, within 14 days prior to randomization. hospitalized at a participating centre primary reason for hospitalization or subsequent in-hospital illness is because of acute covid19 infection first admission for acute covid19 in addition, there will be the below intervention-specific inclusion: randomization who will have no other specific inclusion criteria. randomization lsalt will have no other specific inclusion criteria. randomization dex will have the following specific inclusion criteria on 10 days of steroid course and receiving any supplemental oxygen for 10 days

inclusion criteria: each participant must meet all of the following inclusion criteria to participate in this study: ≥ 18 years of age has laboratory-confirmed sars-cov-2 infection as determined by pcr, or other commercial or public health assay in any specimen, within 14 days prior to randomization. hospitalized at a participating centre primary reason for hospitalization or subsequent in-hospital illness is because of acute covid19 infection first admission for acute covid19 in addition, there will be the below intervention-specific inclusion: randomization who will have no other specific inclusion criteria. randomization lsalt will have no other specific inclusion criteria. randomization dex will have the following specific inclusion criteria on 10 days of steroid course and receiving any supplemental oxygen for 10 days

inclusion criteria: each participant must meet all of the following inclusion criteria to participate in this study: ≥ 18 years of age has laboratory-confirmed sars-cov-2 infection as determined by pcr, or other commercial or public health assay in any specimen, within 14 days prior to randomization. hospitalized at a participating centre primary reason for hospitalization or subsequent in-hospital illness is because of acute covid19 infection first admission for acute covid19 in addition, there will be the below intervention-specific inclusion: randomization who will have no other specific inclusion criteria. randomization arbs will have no other specific inclusion criteria randomization lsalt will have no other specific inclusion criteria. randomization dex will have the following specific inclusion criteria on 10 days of steroid course and receiving any supplemental oxygen for 10 days

inclusion criteria: each participant must meet all of the following inclusion criteria to participate in this study: ≥ 18 years of age has laboratory-confirmed sars-cov-2 infection as determined by pcr, or other commercial or public health assay in any specimen, within 14 days prior to randomization. hospitalized at a participating centre primary reason for hospitalization or subsequent in-hospital illness is because of acute covid19 infection first admission for acute covid19 in addition, there will be the below intervention-specific inclusion: randomization who will have no other specific inclusion criteria. randomization arbs will have no other specific inclusion criteria randomization lsalt will have no other specific inclusion criteria. randomization dex will have the following specific inclusion criteria on 10 days of steroid course and receiving any supplemental oxygen for 10 days

inclusion criteria: ≥ 18 years of age has laboratory-confirmed sars-cov-2 infection as determined by pcr, or other commercial or public health assay in any specimen prior to randomization. hospitalized at a participating centre

inclusion criteria: ≥ 18 years of age has laboratory-confirmed sars-cov-2 infection as determined by pcr, or other commercial or public health assay in any specimen prior to randomization. hospitalized at a participating centre

inclusion criteria: 1. ≥ 18 years of age 2. has laboratory-confirmed sars-cov-2 infection as determined by pcr, or other commercial or public health assay in any specimen prior to randomization. 3. hospitalized at a participating centre

inclusion criteria: 1. ≥ 18 years of age 2. has laboratory-confirmed sars-cov-2 infection as determined by pcr, or other commercial or public health assay in any specimen prior to randomization. 3. hospitalized at a participating centre