The purpose of this randomized, double-blind, controlled, phase 2 trial is to evaluate the efficacy of treatment with HCIP in reducing hospitalization and death prior to hospitalization among outpatient adults who have RNA detection test-confirmed COVID-19 AND have developed any symptoms of COVID-19 including but not limited to fever, cough, or other COVID associated symptoms like anosmia. Ambulatory/outpatient adults subjects 18 years of age or older, regardless of risk factors for severe illness may participate. A total of approximately 1344 eligible subjects stratified with a target goal (but not binding) of 50:50 in the <65 vs ≥ 65 age range will be randomized in a 1:1 ratio to receive either HCIP or control plasma.