Timothy Ray Brown, a 45-year-old San Francisco man previously known to the medical community as “the Berlin patient,” has become the first person to ever be cured of AIDS.

After a stem cell bone marrow transplant, doctors say his HIV, the infection which causes AIDS, was eradicated.

His bone marrow donor was one of a very small percentage of people who are immune to HIV. He received a second bone marrow transplant after a resurgence of Leukemia, which he’s also since been cured of.

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Doctors still aren’t exactly sure what part of his treatment allowed his body to purge the virus, but clinical trials are scheduled to begin in 2012.

This video is from CBS San Francisco, broadcast Monday, May 17, 2011.