Reported cases of AIDS: an update.

To the Editor: In 1991, a colleague and I summarized data on cases of AIDS reported to the Centers for Disease Control and Prevention (CDC) in 1989 and 1990.1 This letter updates recent trends in AIDS cases in the United States by comparing end-of-the-year data for the years 1989 through 1992, using cases reported in each year, whether they were diagnosed during that year or earlier. Although the increase in the number of cases is slowing, the distribution of patients among the various categories of exposure to the human immunodeficiency virus (HIV) is shifting. Table 1 shows the number of cases reported . . .