HIV infection due to a platelet transfusion after allogeneic bone marrow transplantation.

A 30-yr-old man with chronic granulocytic leukaemia received a bone marrow transplant from his histocompatible sister in December 1982. His post-transplant course was complicated by Grade III graft-versus-host disease and multiple infectious episodes until his death from pneumonia on d + 190. He was later found to be seropositive for anti-HIV at the time of his death. Retrospective analysis of stored sera showed a transient period of seropositivity from d + 11 to d + 20 thought to reflect passive transfer of antibody from a blood product transfused prior to d + 11 when he was also exposed to infectious virus. He remained seronegative until d + 78 when anti-HIV was again found. Seropositivity persisted until his death and was attributed to endogenous antibody response. Although it is unclear whether his clinical course was due to AIDS, exposure of an immunosuppressed patient to HIV may be associated with more rapid development of clinical disease.