HIV transmission through transfusion --- Missouri and Colorado, 2008.

Transmission of human immunodeficiency virus (HIV) through transfusion of contaminated blood components was documented in the United States in 1982. Since then, the risk for transfusion-transmitted HIV infection has been almost eliminated by the use of questionnaires to exclude donors at higher risk for HIV infection and the use of highly sensitive laboratory screening tests to identify infected blood donations. The risk for acquiring HIV infection through blood transfusion today is estimated conservatively to be one in 1.5 million, based on 2007-2008 data. This report describes the first U.S. case of transfusion-transmitted HIV infection reported to CDC since 2002. A blood center in Missouri discovered that blood components from a donation in November 2008 tested positive for HIV infection. A lookback investigation determined that this donor had last donated in June 2008, at which time he incorrectly reported no HIV risk factors and his donation tested negative for the presence of HIV. One of the two recipients of blood components from this donation, a patient undergoing kidney transplantation, was found to be HIV infected, and an investigation determined that the patient's infection was acquired from the donor's blood products. Even though such transmissions are rare, health-care providers should consider the possibility of transfusion-transmitted HIV in HIV-infected transfusion recipients with no other risk factors.