Figure 1.
The annual incidence of TRALI before (1993-99) and after (2001-07) the introduction of universal leukoreduction (ULR) in the year 2000 is shown. No cases of TRALI were reported in five of the seven years post-introduction of ULR, as compared with only one of seven years pre-introduction of ULR in which cases of TRALI were not reported pre-introduction of ULR.