[Practical impact of instructions concerning AIDS]. / Impact pratique des instructions concernant le SIDA.

Following an inquiry to determine what measures has been taken since january 1984 in French Blood Centers to avoid transmission of AIDS by blood, answers from 49 % of the centers, representing 75 % of the blood collection in France were analyzed. Due to the absence of a biological marker, only information given to blood donors, unpaid in France, permitting spontaneous autoexclusion had been used to screen donors in blood center. Direct questioning of donor for risk factors before taking blood raised numerous problems in donors of whole blood, but could be satisfactorily implemented in cytapheresis and plasmapheresis donors mainly because of closer human contact between volunteers and the medical staff.