Analysis of Coronavirus Disease 19 (COVID-19) Convalescent Plasma

Plasma from patients who have recovered from coronavirus disease 2019 (COVID-19) is referred to as COVID-19 convalescent plasma (CCP), and may contain antibodies against SARS-CoV-2, the virus responsible for COVID-19. CCP infusion is being evaluated as a therapeutic or prophylactic approach in COVID-19 patients. The goal of this study is to help develop a bank of convalescent plasma in California, especially in medically underserved communities particularly affected by the disease. In parallel, CCP administered to COVID-19 patients will be collected and analyzed to determine whether the antibody profile correlates with clinical outcome. The purpose of this non-therapeutic study is to learn more about the CCP antibody profile and the effect it may have in treating COVID-19 infection.

For COVID-19 convalescent individuals: * Age: ≥ 18 years * Evidence of COVID-19 documented by a laboratory test either by: a diagnostic test (e.g., a NP swab) at the time of illness OR a positive serological test for SARS-CoV-2 antibodies after recovery, if prior diagnostic testing was not performed at the time COVID-19 was suspected. Note: If volunteers can't provide evidence of COVID-19, but are otherwise eligible, then we will test them for SARS-CoV-2 antibodies to confirm eligibility. * Be willing to complete a pre-screening questionnaire * Be willing to donate blood samples * Permit medical record review * For prospective CCP donors only: weigh more than 110 pounds and be in general good health For (COVID-19 convalescent plasma (CCP) recipients: * Be enrolled in a clinical trial involving the infusion of CCP for the treatment of COVID-19. * Be willing to provide blood samples * Permit medical record review