['A case of transfusion-related human immunodeficiency virus-1 (HIV-1) transmission was not detected by standard HIV antibody screening.', 'In a look-back procedure, the preceding donations were extensively analyzed by nucleic acid amplification technology (NAT) screening and alternative serological tests.', 'The chain of infection could be demonstrated by the analysis of HIV-specific amplicon sequences from the donor and the recipient.'] Is recent experience with human immunodeficiency virus transmission by cellular blood products in Germany : antibody screening sufficient to prevent transmission?