Imaging Immune Activation in COVID-19

Inclusion Criteria: * Age \>18 years * Ability to read and understand written informed consent document * Have a recent diagnosis of SARS-CoV-2 infection as defined by a prior positive SARS-CoV-2 nucleic acid-based diagnostic test performed in a clinical laboratory on one or more nasopharyngeal or respiratory secretion samples. * \> 14 days since onset of COVID-19 symptoms (or if no symptoms, from time of initial nucleic acid based diagnostic test). * Laboratory evaluations obtained within 60 days prior to entry. * Platelet count ≥75,000/mm3 * ANC \>1000/mm3 * Aspartate aminotransferase (AST) \<3 x ULN * Alanine aminotransferase (ALT) \<3 x ULN * Calculated creatinine clearance (CrCl) ≥60 mL/min as estimated by the Cockcroft- * Gault equation Exclusion Criteria: * Any medical condition that would compromise the imaging acquisition, in the opinion of the investigator * Participants who are pregnant (female participants of childbearing age will be tested prior to injection of imaging agent at entry visit/initial visit - positive test will exclude from further participation in the study) * Participants who are breastfeeding * Female participants of reproductive potential (defined as women who have not been post-menopausal for at least 24 consecutive months (i.e., who have had menses within the preceding 24 months), or women who have not undergone surgical sterilization, specifically hysterectomy and/or bilateral oophorectomy or bilateral salpingectomy) must have …