Article: AIDS among persons ages at least 50 years - United States, 1991-1996.

Early in the human immunodeficiency virus (HIV) epidemic, infection occurred disproportionately among older persons as a result of transmission through receipt of contaminated blood or blood products. Through 1989, receipt of contaminated blood or blood products accounted for only 1% of cases among persons aged 13-49 years; in comparison, this risk factor accounted for 6%, 28%, and 64% of cases among persons aged 50-59 years, 60-69 years, and [is greater than or equal to] 70 years, respectively[1]. Because of implementation of voluntary donor deferral and routine screening of blood donations in 1985, the number and proportion of acquired immunodeficiency syndrome (AIDS) ...

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