| htlv-i and hiv-i antibody frequency in thalassemics and drug addicts in southeast sicily. | htlv-i (human t-lymphotropic virus type 1) and hiv-1 (human immunodeficiency virus type 1) antibodies have been investigated in 702 sera samples from: 259 drug addicts nerve screened for hiv-1 (group i), 43 drug addicts already identified as hiv-1 seropositive (group ii), 222 thalassemics (group iii) and 178 occasional blood donors (group iv). the sera, collected from june 1984 to april 1989, were screened a first time with immunoenzymatic test and the samples proving positive were then confirme ... | 1991 | 1670058 |