AIDS drugs

When the first HIV drug, AZT, came to market in 1987, it cost $10,000 a year.

That price makes Peter Staley laugh today. "It sounds quaint and cheap now, but $10,000 a year at that time was the highest price ever set for any drug in history," he says.

Doctors in London say they have apparently eradicated HIV from a patient's body. It's only the second time this has been accomplished, despite many attempts over more than a decade.

While some commentators are calling this a "cure" for HIV, the scientists who performed the experiment say it's too soon to say that. Instead, they say the patient is in remission.

Flickr (Creative Commons)

New research shows more promise for using AIDS treatment drugs as a prevention tool, to help keep uninfected people from catching HIV during sex with a partner who has the virus.