inclusion criteria: * has virologically confirmed covid-19 requiring hospital admission. * has respiratory symptoms including cough and dyspnea * requires supplemental oxygen therapy * male participant is abstinent from heterosexual intercourse or agrees to use contraception during the intervention period and for at least 14 days, corresponding to time needed to eliminate study intervention(s) (example, 5 terminal half-lives after the last dose of study intervention) * female participant is not a woman of childbearing potential (wocbp) or is a wocbp who is abstinent from heterosexual intercourse or using contraception during the intervention period and for at least 14 days, corresponding to time needed to eliminate study intervention(s) (example, 5 terminal half-lives after the last dose of study intervention)

inclusion criteria: * has virologically confirmed covid-19 requiring hospital admission. * has respiratory symptoms including cough and dyspnea * requires supplemental oxygen therapy * male participant is abstinent from heterosexual intercourse or agrees to use contraception during the intervention period and for at least 14 days, corresponding to time needed to eliminate study intervention(s) (example, 5 terminal half-lives after the last dose of study intervention) * female participant is not a woman of childbearing potential (wocbp) or is a wocbp who is abstinent from heterosexual intercourse or using contraception during the intervention period and for at least 14 days, corresponding to time needed to eliminate study intervention(s) (example, 5 terminal half-lives after the last dose of study intervention)

inclusion criteria: - has virologically confirmed covid-19 requiring hospital admission. - has respiratory symptoms including cough and dyspnea - requires supplemental oxygen therapy - male participant is abstinent from heterosexual intercourse or agrees to use contraception during the intervention period and for at least 14 days, corresponding to time needed to eliminate study intervention(s) (example, 5 terminal half-lives after the last dose of study intervention) - female participant is not a woman of childbearing potential (wocbp) or is a wocbp who is abstinent from heterosexual intercourse or using contraception during the intervention period and for at least 14 days, corresponding to time needed to eliminate study intervention(s) (example, 5 terminal half-lives after the last dose of study intervention)

inclusion criteria: - has virologically confirmed covid-19 requiring hospital admission. - has respiratory symptoms including cough and dyspnea - requires supplemental oxygen therapy - male participant is abstinent from heterosexual intercourse or agrees to use contraception during the intervention period and for at least 14 days, corresponding to time needed to eliminate study intervention(s) (example, 5 terminal half-lives after the last dose of study intervention) - female participant is not a woman of childbearing potential (wocbp) or is a wocbp who is abstinent from heterosexual intercourse or using contraception during the intervention period and for at least 14 days, corresponding to time needed to eliminate study intervention(s) (example, 5 terminal half-lives after the last dose of study intervention)