These data corroborate the fact that the rate of detection of truly contaminated PLT apheresis products in the United States is approximately 1 in 5000 (0.02%); this is lower than the 0.03 to 0.05 percent rates that were generally quoted in the literature before the implementation of prospective bacterial culturing programs.
The rate of TP cases by the two-bottle system was not increased over the one-bottle system, although anaerobic-bottle-only positive cases were detected. FP and IND rates were increased in the two-bottle system, attributable to the anaerobic bottle. Observation of only one documented transfusion-related septic reaction in 4 years of bacterial screening at UBS is reassuring, although limitations in passive surveillance and higher rates of reactions reported by others indicate the need for continued vigilance.
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