A person undergoes a blood test at a roadside AIDS testing stand in Langa, Cape Town, during International AIDS Day in 2010. Science has given the world "no excuse" to resist bold action to cut the ... more 

A person undergoes a blood test at a roadside AIDS testing stand in Langa, Cape Town, during International AIDS Day in 2010. Science has given the world "no excuse" to resist bold action to cut the spread of the 30-year AIDS pandemic, said a top US expert at the opening of the International AIDS Conference on Sunday less