残余危险度是输血传播疾病中较常用的一项指标,反映了受血者经输用“合格”的阴性血而可能成为病毒感染者的危险度。本文介绍残余危险度的概念及计算,举例说明残余危险度的应用,简介世界各国开展残余危险度的研究情况及降低残余危险度的方法。 Residual risk is a more commonly used indicator of transfusion-transmitted diseases and reflects the risk that recipients may become infected with “qualified” negative blood. This paper introduces the concept and calculation of residual risk, gives an example of the application of residual risk, introduces the research on the residual risk in various countries in the world and the method of reducing the residual risk.