Inclusion Criteria:  Have a documented positive qRT-PCR for SARS-CoV-2 confirming prior COVID-19 diagnosis within the last 28 days At least 18 years of age. Female subjects must not be pregnant or trying to become pregnant during the duration of study participation. No known plans to move out of the state, or become unable to return to one of the Mayo Clinic sites for follow-up testing. Must be able to provide clear informed written consent.  Exclusion Criteria:  Individuals with pacemakers or other implantable devices that will make interpreting a CT scan challenging. Individuals with major limitations to exercise.