Risk factor/infectious agent | Â | Risk of TTI in blood products released | Ref. | |
---|---|---|---|---|
 |  | U.S. | Europe |  |
Virus | Â | Â | Â | Â |
HIV |  | 1 in 2,135,000 | 1 in 909,000 – 5,500,000 | 26, 30, 33 |
HCV |  | 1 in 1,930,000 | 1 in 2,00,000 – 4,400,000 | 26, 30, 33 |
HBV |  | 1 in 277,000 | 1 in 72,000 – 1,100,000* | 33 |
WNV | Â | 1 in 350,000 | No reported cases | 56, 63 |
HTLV-II | Â | 1 in 2,993,000 | Not tested | 30 |
Bacteria | Â | Â | Â | Â |
Bacterial contamination | RBC | 1 in 38,500 | 8, 10 | |
 | Platelets | 1 in 5,000 | 13 | |
Parasites | Â | Â | Â | Â |
Malaria |  | 1 in 1,000,000 – 5,000,000 |  | 105 |