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BOSTON -- The adolescent HIV-1 epidemic as reflected in a multisite cohort of U.S. youth is changing from one of vertically transmitted infection to one where infection is acquired through risk behaviors, posing new challenges for providers and the health care system, Dr. Allison L. Agwu reported in a poster session at the 15th Conference on Retroviruses and Opportunistic Infections.

The HIV Research Network, a consortium of 21 clinical sites that provide primary HIV care, includes 684 patients aged 12-24 years. Vertical transmission was the source of infection in 227 patients, while risk behaviors account for 457 cases, according to Dr. Agwu of Johns Hopkins University, …