Severe comorbidity (eg, heart failure, kidney failure, sickle cell disease, active cancer). Concomitant infection with another virus (eg HIV, hepatitis B and C virus, HTLV 1/2) or bacteria. History of severe blood transfusion allergy (including patients who have experienced this reaction during the first transfusion, or within six hours after completion, who will then not receive the second dose) will be excluded from the analysis. Participant who received the first dose of plasma within 72 hours of its allocation to the experimental group. Participant (or his relative) who has withdrawn his consent to participate at any stage of the study.

Severe comorbidity (eg, heart failure, kidney failure, sickle cell disease, active cancer). Concomitant infection with another virus (eg HIV, hepatitis B and C virus, HTLV 1/2) or bacteria. History of severe blood transfusion allergy (including patients who have experienced this reaction during the first transfusion, or within six hours after completion, who will then not receive the second dose) will be excluded from the analysis. Participant who received the first dose of plasma within 72 hours of its allocation to the experimental group. Participant (or his relative) who has withdrawn his consent to participate at any stage of the study.