Announced at this week’s international AIDS Vaccine Conference in Barcelona, the South African trial will involve the only vaccine shown to have some effect on the virus when it was tested among 16,000 people in Thailand. Released in 2009, the Thai trial’s results showed that HIV infection rates were 31 percent lower in participants who had received the vaccine than those who had not.
http://www.health-e.org.za/2013/10/09/sa-offers-hiv-vaccine-research-hope