Abuja - Winnie Madikizela-Mandela has come out firmly and vehemently in favour of sexual abstinence as the only efficient way to fight the spread of Aids. Speaking at the International Conference on Aids and Sexually Transmitted Infections in Africa (ICASA) in Abuja, Nigeria, on Thursday, Madikizela-Mandela said: "We just have to tell our children to abstain. That's the only way we will prevent Aids as mothers on the continent. "And we tell our daughters it's a very simple remedy, it's called abstinence."