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The annual incidence of TACO before (1993-99) and after (2001-07) the introduction of universal leukoreduction (ULR) in the year 2000 is shown. The incidence rate was 5 or fewer cases per 100,000 components transfused in six of the seven years post-introduction of ULR, compared with only two of the seven years pre-introduction of ULR.
