HIV Diagnosis Rate Fell by Third in U.S. Over Decade

Experts celebrated the findings as hopeful news that the AIDS epidemic may be slowing in the U.S.

A man gets an HIV awareness campaign ribbon.
A man gets an HIV awareness campaign ribbon.Credit: Reuters

The rate of HIV infections diagnosed in the United States each year fell by one-third over the past decade, a government study finds. Experts celebrated it as hopeful news that the AIDS epidemic may be slowing in the U.S.

“It’s encouraging,” said Patrick Sullivan, an Emory University AIDS researcher who was not involved in the study.

The reasons for the drop aren’t clear. It might mean fewer new infections are occurring. Or that most infected people already have been diagnosed so more testing won’t necessarily find many more cases.

“It could be we are approaching something of a ‘ceiling effect,’” said one study leader, David Holtgrave of Johns Hopkins University.

The study was released online Saturday by the Journal of the American Medical Association. It is part of the journal’s special report on HIV research, issued ahead of the International AIDS Conference that starts today in Melbourne, Australia.

HIV is the virus that causes AIDS, which destroys the immune system. The World Health Organization estimates 35 million people globally have the virus. In the United States, 1.1 million people are thought to be infected, though many don’t know it.

The decade-long study is based on HIV diagnoses from all 50 states’ health departments.

The findings: 16 out of every 100,000 people ages 13 and older were newly diagnosed with HIV in 2011, a steady decline from 24 out of 100,000 people in 2002.

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