Excluding blood donors at high risk of HIV infection in a west African city.

Objective: To examine the potential impact of deferral of blood donors at high risk of HIV infection in a west African city where blood is screened for HIV antibodies but no other special measures are taken to protect the blood supply.

Design: Cross sectional study.

Setting: National Blood Transfusion Centre and Project RETRO-CI, an international collaborative AIDS research project, Abidjan, Côte d'Ivoire.

Risk of HIV infection from transfusion with blood negative for HIV antibody in a west African city.

Objective: To estimate the risk of infection with HIV (HIV 1 or HIV 2, or both) from transfusion of a screened unit of blood in a high prevalence area in west Africa.

Design: Retrospective cohort study for January-July 1991.

Setting: National Blood Transfusion Centre, Abidjan, Côte d'Ivoire.