Numerous infectious diseases are transmissible by blood, with AIDS and hepatitis being the predominant concerns today. Less in the limelight, but nonetheless blood transmissible, are cytomegalovirus infection, malaria, babesiosis, and hepatitis B. A major controversy with respect to non-A non-B hepatitis relates to the use of 'surrogate' testing of donors for ALT and hepatitis B core antibody. Transfusion-associated AIDS has been markedly reduced as a risk, due to blood donor antibody screening implemented in March 1985. However, other retroviruses such as HTLV-1, HTLV-II and HIV-II pose additional concerns regarding the safety of the blood supply, and decisions will be forthcoming regarding testing of donated blood for antibody to these viruses.
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