Adult patients who are capable and willing to provide informed consent. Confirmed COVID-19 infection (by rapid antigen test or PCR) within the past 72 hours COVID-19 symptoms, if present, must have commenced within 72 hours The patient has mild disease, as defined by: outpatient status – not currently hospitalized or under immediate consideration for hospitalization, oxygen saturation = 92% on pulse oximeter (confirmed by two readings), respiratory rate <25 breaths / minute, heart rate < 120 beats / minute, mental status normal The patient has one or more risk factors for severe disease, specifically either: Age =40 years with one of the following comorbidities: Obesity (BMI = 30 kg/m2), Diabetes (type 1 or 2), Chronic kidney disease, Chronic cardiovascular disease (previously diagnosed heart failure, coronary artery disease, cerebrovascular accident, or peripheral vascular disease), Chronic lung disease (asthma, chronic obstructive pulmonary disease, interstitial lung disease, active or previous pulmonary tuberculosis) OR Age =60 years irrespective of any comorbidities Patient must be able and willing to comply with the requirements of this study protocol.

Adult patients who are capable and willing to provide informed consent. Confirmed COVID-19 infection (by rapid antigen test or PCR) within the past 72 hours COVID-19 symptoms, if present, must have commenced within 72 hours The patient has mild disease, as defined by: outpatient status – not currently hospitalized or under immediate consideration for hospitalization, oxygen saturation = 92% on pulse oximeter (confirmed by two readings), respiratory rate <25 breaths / minute, heart rate < 120 beats / minute, mental status normal The patient has one or more risk factors for severe disease, specifically either: Age =40 years with one of the following comorbidities: Obesity (BMI = 30 kg/m2), Diabetes (type 1 or 2), Chronic kidney disease, Chronic cardiovascular disease (previously diagnosed heart failure, coronary artery disease, cerebrovascular accident, or peripheral vascular disease), Chronic lung disease (asthma, chronic obstructive pulmonary disease, interstitial lung disease, active or previous pulmonary tuberculosis) OR Age =60 years irrespective of any comorbidities Patient must be able and willing to comply with the requirements of this study protocol.