Fig. 6: Distribution of age, gender, and ABO blood group in COVID-19 convalescent plasma donors recruited in this study.

(A) A total of 869 donors with 478 males and 371 females participated in this study. The average age of the donors was 38.21 years old (95% CI:37.67-38.75). The lines in the violin represent median and quartiles of age. (B) Distributions of 34.89%, 27.46%, 29.38% and 8.27% for A, B, O and AB blood groups. A, B, O, and AB are Blood groups.