IRCT20150808023559N21 IRCT 2020-05-09 Ardabil University of Medical Sciences The Effect of Convalescent Plasma Therapy on Patients with 19-COVID The Effect of Convalescent Plasma Therapy on the Outcomes of Patients with 19-COVID 2020-05-12 anticipated 60 Complete https://irct.ir/trial/47594 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Patients are assigned randomly by blocking in one of the two specified groups and after selecting the envelope for each patient, before starting the treatment regimen envelope will be opened and based on the protocol, one of two methods will be selected. 1-2 covid 19. Intervention 1: Intervention group: Patients in the intervention group, in addition to routine treatment, will receive convalescent Plasma extracted from improved patients from 19-COVID in the amount of 500 ml over a period of 4 hours. Intervention 2: Control group: They only receive routine treatment. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is It is not yet known