inclusion criteria: 1. individuals (or legally authorized representative) providing written informed consent prior to initiation of any study procedures. 2. male or non-pregnant female adult ≥18 years of age at time of enrollment 3. subject consents to randomization within 48 hours of hospital admission 4. symptom duration of 14 days or less upon recruitment 5. at least one of the following: 1. radiographic infiltrates by imaging (chest x-ray or ct scan), or 2. clinical assessment (evidence of rales/crackles on the exam) and spo2 ≤ 94% on room air

inclusion criteria: 1. individuals (or legally authorized representative) providing written informed consent prior to initiation of any study procedures. 2. male or non-pregnant female adult ≥18 years of age at time of enrollment 3. subject consents to randomization within 48 hours of hospital admission 4. symptom duration of 14 days or less upon recruitment 5. at least one of the following: 1. radiographic infiltrates by imaging (chest x-ray or ct scan), or 2. clinical assessment (evidence of rales/crackles on the exam) and spo2 ≤ 94% on room air

inclusion criteria: individuals (or legally authorized representative) providing written informed consent prior to initiation of any study procedures. male or non-pregnant female adult ≥18 years of age at time of enrollment subject consents to randomization within 48 hours of hospital admission symptom duration of 14 days or less upon recruitment at least one of the following: radiographic infiltrates by imaging (chest x-ray or ct scan), or clinical assessment (evidence of rales/crackles on the exam) and spo2 ≤ 94% on room air

inclusion criteria: individuals (or legally authorized representative) providing written informed consent prior to initiation of any study procedures. male or non-pregnant female adult ≥18 years of age at time of enrollment subject consents to randomization within 48 hours of hospital admission symptom duration of 14 days or less upon recruitment at least one of the following: radiographic infiltrates by imaging (chest x-ray or ct scan), or clinical assessment (evidence of rales/crackles on the exam) and spo2 ≤ 94% on room air

inclusion criteria: 1. individuals (or legally authorized representative) providing written informed consent prior to initiation of any study procedures. 2. male or non-pregnant female adult ≥18 years of age at time of enrollment 3. subject consents to randomization within 48 hours of hospital admission 4. symptom duration of 14 days or less upon recruitment 5. at least one of the following: 1. radiographic infiltrates by imaging (chest x-ray or ct scan), or 2. clinical assessment (evidence of rales/crackles on the exam) and spo2 ≤ 94% on room air

inclusion criteria: 1. individuals (or legally authorized representative) providing written informed consent prior to initiation of any study procedures. 2. male or non-pregnant female adult ≥18 years of age at time of enrollment 3. subject consents to randomization within 48 hours of hospital admission 4. symptom duration of 14 days or less upon recruitment 5. at least one of the following: 1. radiographic infiltrates by imaging (chest x-ray or ct scan), or 2. clinical assessment (evidence of rales/crackles on the exam) and spo2 ≤ 94% on room air