“…Although there are 3,345 cases of transfusion-associated AIDS in the United States, excluding haemophiliacs (Center for Disease Control, Atlanta, April 30,1990) and 226 in Canada, 27 since the implementation of HIV-1 screening there have been only 14 cases of transfusion-associated AIDS in the United States. 2~ The National Office of the Canadian Red Cross Society is aware of two possible HIV seroconversions associated with transfusions (personal communication, National Office, Canadian Red Cross Society).…”