M-A: Convalescent plasma does not reduce mortality in COVID-19. 21 Nov, 2021 | 23:09h | UTC Association between convalescent plasma treatment and mortality in COVID-19: a collaborative systematic review and meta-analysis of randomized clinical trials – BMC Infectious Diseases Related: RCT: Another study shows convalescent plasma does not improve outcomes in critically ill patients with Covid-19. RCT: Convalescent plasma does not improve outcomes and may be harmful to hospitalized patients with COVID-19. NIH study shows no significant benefit of convalescent plasma for COVID-19 outpatients with early symptoms. M-A: Convalescent plasma is safe but does not improve outcomes in the treatment of COVID-19. RECOVERY Trial: No benefit from convalescent plasma in patients admitted to hospital with COVID-19.