The majority of children in the United States with human immunodeficiency virus (HIV) infection ...

ANS: D
More than 90 of the children with HIV under 13 years who were reported to the Centers for Disease Control and Prevention acquired the infection during the perinatal period. With intervention, the number of children infected can be decreased. Sexual contact and IV drug use are the leading causes of infection in the 14- to 19-year age group. This number is less than the number of cases in the under 13-year age group. Transfusion has accounted for 3 to 6 of all pediatric acquired immunodeficiency syndrome cases to date. Before 1985 and routine screening of donated blood products, children with hemophilia were at great risk from pooled plasma products.