Statistics in blood collection and transfusion

There were 112,500,000 blood donations worldwide in 2013; these units were provided by altruistic donors in some health systems and by replacements and paid donors in others. In the Unites States, blood components are donated by volunteer, non-remunerated donors, and in 2015 there were 12,591,000 blood donations. Although, the transfusion of blood components is still a common procedure, since 2008 there has been a progressive decrease in the number of donations and utilization of blood in the United States as consequence of restrictive policies, blood management programs, and technical advances. Today blood complications from viral infectious agents such as HIV and HCV are very rare, but noninfectious complications persist, with transfusion-related acute lung injury (TRALI) and transfusion-associated circulatory overload (TACO), leading the cause of death as consequence of transfusion.