Blood transfusion-associated adverse reactions in the U.S. in 2019 and 2021

Data is from the National Blood Collection and Utilization Survey (NBCUS).
* Diagnostic tests were defined as “any test to confirm a reaction occurred” and therapeutic intervention was defined as “intervention to treat a reaction (e.g., vasopressors, intubation, transfer to intensive care to prevent impairment, permanent damage, or death).
** For example, vasopressors, blood pressure support, intubation, or transfer to the intensive care unit.