study<\/a> looked at 1,763 couples in which only one partner was infected with HIV.<\/p>\nIt was abandoned four years early as the trial was so successful.<\/p>\n
The World Health Organisation said it was a “crucial development”.<\/p>\n
The study began in 2005 at 13 sites across across Africa, Asia and the Americas.<\/p>\n
Patients were split into two groups. In one, HIV infected partners were immediately given a course of anti-retroviral drugs.<\/p>\n
The other group only received the treatment when their white blood cell count fell. Both were given regular testing for the virus and free condoms.<\/p>\n
Among those immediately starting anti-retroviral therapy there was only one case of transmission between partners.<\/p>\n
In the other group there were 27 HIV transmissions.<\/p>\n
‘Renewed commitment’<\/span><\/p>\n“This breakthrough is a serious game changer and will drive the prevention revolution forward. It makes HIV treatment a new priority prevention option,” said Michel Sidibe, executive director of the Joint United Nations Programme on HIV\/Aids (UNAIDS).<\/p>\n
The World Health Organisation says sexual transmission accounts for 80% of all new HIV infections. Its director general, Dr Margaret Chan, described the announcement as a “crucial development”.<\/p>\n
She added: “The findings from this study will further strengthen and support the new guidance that WHO is releasing in July to help people living with HIV protect their partners.”<\/p>\n
The value of anti-retrovirals, in preventing transmission, had been speculated for some time after observational studies, but researchers say this is the first time it has been proven in clinical trials.<\/p>\n
Keith Alcorn, from the NAM charity, said: “This study resoundingly confirms what lots of smaller studies have been telling us for several years.<\/p>\n
“International donors cannot ignore the evidence any longer: HIV treatment is a very powerful form of HIV prevention, and could have a major effect on the HIV epidemic in the worst-affected countries.<\/p>\n
“What we need now is a renewed commitment to HIV treatment, and studies to show how to get the maximum benefit out of this breakthrough at country level.”<\/p>\n<\/div>\n<\/p>\n
Read More:
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