| patterns of hiv-1 and htlv-i/ii in intravenous drug abusers from the middle atlantic and central regions of the usa. | seroprevalence of human immunodeficiency virus type 1 (hiv-1) and human t lymphotropic virus types i and ii (htlv-i/ii) was determined among 1160 intravenous (iv) drug abusers from five drug treatment or medical centers (manhattan, brooklyn, new jersey, detroit, and new orleans). hiv-1 infection ranged from 5% in new orleans to 48% in new york city. hispanics and blacks had a significantly higher rate of hiv-1 infection than whites (p less than .01), but within each group rates were similar betw ... | 1990 | 2373871 |