Part A-Outcome measure title: SARS-CoV-2 viral load. Description: Time-weighted change from baseline (measuredat Day 3; Day 5; and Day 8) in SARS-CoV-2 viral load in nasopharyngeal swabs through Day 8;Part B-Outcome measure title: Occurrence of hospitalizations; emergency room visits or death. Description: Proportion of patients experiencing hospitalizations (= 24 hours of acute care) and/or emergency room visits related to COVID-19 or death from any cause up to Day 29.

Part A-Outcome measure title: SARS-CoV-2 viral load. Description: Time-weighted change from baseline (measuredat Day 3; Day 5; and Day 8) in SARS-CoV-2 viral load in nasopharyngeal swabs through Day 8;Part B-Outcome measure title: Occurrence of hospitalizations; emergency room visits or death. Description: Proportion of patients experiencing hospitalizations (= 24 hours of acute care) and/or emergency room visits related to COVID-19 or death from any cause up to Day 29.