Inclusion Criteria:  Participants must satisfy the following criteria to be enrolled in the study:  Individuals who have tested positive for SARS-CoV-2 via EUA RT-PCR testing. Male and female participants of any race and ethnicity between 18 to 89 years of age (inclusive) at the time of enrollment in the study. Must be able to communicate with the investigator, understand, and comply with the requirements of the study.  Cohort 1 Additional Inclusion Criteria:  Must be able to provide estimated date of symptom onset. Must be available for specimen collection greater than 14 days (i.e., 15 days inclusive onward) and less than 107 days (i.e., 106 days inclusive or less) after first exhibiting symptoms of confirmed SARS-CoV-2 infection.  Cohort 2 Additional Inclusion Criteria:  ° Must be available for specimen collection greater than 14 days (i.e., 15 days inclusive onward) and less than 107 days (i.e., 106 days inclusive or less) after first exhibiting symptoms of confirmed SARS-CoV-2 infection, OR, from date of RT-PCR test if asymptomatic.  Exclusion Criteria:  The presence of any of the following will exclude a participant from enrollment:  Individuals who did not test positive for SARS-CoV-2 on EUA RT-PCR. Protected populations including pregnant women, prisoners, mentally disabled persons, and wards-of-the state. Any significant condition, laboratory abnormality, or psychiatric illness that would prevent the participant from safely participating in the study. Exposure to a SARS-CoV-2 investigational drug (new chemical entity) within 60 days prior to enrollment at the discretion of the Sponsor. Receipt of immunosuppressive medications, such as, but not limited to, recent moderate- or high-dose systemic steroids or immunomodulators within 1 month prior to enrollment at the discretion of the Sponsor. Treatment with immunosuppressants/ immunomodulators that do not impact T cells or B cells may be allowed at the discretion of the Sponsor. Steroid formulations including low-dose oral steroids (≤ 10 mg prednisone equivalents per day), inhaled steroids, or topical steroids are not considered exclusionary. Doses >10 and <20 mg prednisone equivalents per day, must receive Sponsor approval.