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Due to an expansion in international travel, an increasing number of blood donors are at risk of exposure to malaria. Preventions of transfusional malaria is required by law in France. Acting as National Reference Center for Malarial Immunology we noticed that this regulation was not being respected by all blood banks. We conducted a questionnaire study concerning 181 blood banks to evaluate under which circumstances serological tests were requested, the policy employed in case of seropositivity, the cost of screening, and wishes concerning modification of the law. The response rate was 46.9%. We noticed a great variability in attitude: only 21% of blood banks followed the regulation; 63% added extra criteria to the law; 16% did not follow the regulation. Indirect immunofluorescence was the main method used by 91.5% of blood banks. However the specificity threshold fluctuated. The fate of the blood unit in case of seropositivity was variable (discard of blood bags, plasma fractionation, blood used). Centers who answered to questionnaire performed 2,513,687 blood donations during the survey. A serology was carried out in 2.6% of donations, and was positive in 9.4% of cases i.e. 0.24% of donations. The average cost of screening was 35 FF. The profit loss due to discard of positive blood was estimated at 1.7 million FF. for the duration of the survey and the blood banks studied. 99% of centers answering the questionnaire expressed desire for standardisation of screening method.
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