Evaluation of SARS-CoV-2 (COVID-19) Antibody-containing Plasma thErapy

Investigators are doing this research to learn more about high-titer COVID-19 convalescent plasma (HT-CCP) transfusion as a possible treatment for people who have COVID-19, the coronavirus infection. "HT-CCP" is plasma that contains a high amount of antibodies that were made to fight off COVID-19 because it is donated by another person who has also been infected with coronavirus but has recovered, so their immune system has had enough time to make these antibodies. This study is being done to determine whether HT-CCP will help people with COVID-19 recover from their infection more quickly and lower their risk of having to go on a ventilator or reduce the time they need to stay on a ventilator. It is not yet known whether HT-CCP helps people with COVID-19, which is why the study needs to be randomized, meaning some subjects will be randomly selected to receive HT-CCP while others will be randomly selected to receive FFP.