On October 23, 2007, the National Institute of Allergy and Infectious Diseases (NIAID) issued a press release stating that as a result of findings from the STEP HIV vaccine study, the South African Phambili study, which tested the same candidate vaccine, has also been discontinued.

An independent Data Safety Monitoring Board for the Phambili study concluded that the vaccine being tested could not be shown to prevent HIV infection or affect the course of the disease in people subsequently infected with HIV. Immunizations and enrollment have been permanently suspended for this study, although follow-up visits will still occur.

mas información en:

http://www3.niaid.nih.gov/news/newsreleases/2007/step_update.htm