Excerpt: Despite the dramatic growth in our knowledge about HIV/AIDS treatment over the past 15 years, several fundamental questions about HIV care still exist: How many persons in the United States receive regular care for HIV infection? What are the characteristics of that population? How much care do HIV-infected individuals use, how much does it cost, and who pays for it? Policymakers, researchers, and the national community depend upon reliable answers to these questions to help guide their decisions in allocating future resources to HIV treatment and research.

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