To the Editor.
—Heterosexual transmission of HIV is decidedly in one direction, according to recent data published and distributed by the AIDS Surveillance Unit of the New York City Department of Health.
Among 26985 men with AIDS reported through March 1991, a history of acquiring the infection because of intercourse with women at risk was elicited in only 11 instances.1 This is in contrast to 1148 (25%) of 4640 women with AIDS who reported having sex with men at risk (the report notes that data are not tabulated on intravenous drug users who also report high-risk heterosexual contact).
It is probable that the pool of high-risk men exceeds the infected female population. For example, there are 9420 reported intravenous drug-user cases among men and 2623 among women. Thus, there would be a greater chance of a woman contracting HIV from any given sexual contact with a man than vice
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