Abstract
Recent concerns about disease transmission through blood transfusion have prompted frequent questions to physicians about the safety of transfusion. Patients who may need transfusions are anxious to know, often in considerable detail, about their chances of contracting the acquired immunodeficiency syndrome (AIDS) or hepatitis as a result. Patients who have received transfusions ask about their chances of having been infected. Unfortunately, there are few data that allow an easy or accurate answer to either question. The truth is that we do not know the risk of acquiring hepatitis or AIDS as a result of transfusion; the available data permit estimates . . .