“…Of all included studies, 36 reported HBV [ 3 , 13 , 29 – 62 ]; 34 reported HIV [ 3 , 13 , 29 – 33 , 35 – 38 , 42 , 43 , 45 , 46 , 48 – 58 , 60 – 68 ]; 31 reported HCV [ 3 , 13 , 29 – 33 , 35 – 38 , 41 – 43 , 45 – 51 , 54 , 55 , 57 , 58 , 60 – 62 , 69 , 70 ]; and 23 reported syphilis [ 3 , 13 , 29 – 31 , 33 , 35 , 36 , 38 , 42 , 43 , 45 , 46 , 49 – 52 , 54 , 57 , 58 , 60 , 68 , 71 ] prevalence among blood donors in Ethiopia. Regarding the distribution of each TTIs with sex and donor type of the study participants, it was found as follows: of 36 studies reported HBV, 24 and 9 reported sex and donor type, respectively; of 34 studies reported HIV, 24 and 8 studies reported sex and donor type, respectively; of 31 reported HCV, 19 and 7 reported sex and donor type, respectively; and of 23 studies reported syphilis, 14 and 5 studies reported sex and donor type, respectively (Table 1 ).…”