article: 20 July 2016 Last updated at 08:43 BST Better education, the availability of drugs that fight the spread of the virus and the prevention of HIV transmission to newborn babies have all played a role. But it is proving stubborn to get rid of. As South Africa hosts a major HIV-Aids conference, the BBC's Karen Allen has been to one of the country's HIV hot spots in KwaZulu-Natal.
summary: Remarkable progress has been made in reducing the rate of growth in new HIV infections - the virus that causes Aids.