There is a heavy stigma attached to AIDS in China.Children, probably the most vulnerable group among AIDS patients, are usually excluded from education and in many cases abandoned by parents and family. However, things are improving slowly. On World AIDS Day 2008, President Hu Jintao shook hands with sufferers to help reduce some of the odium. In Berlin, events to mark World AIDS Day used social isolation as the theme. As many as 25 million people have died of HIV-related causes and currently 33.4 million people worldwide are infected with the virus. In London, U2 singer Bono joined up with Didier Drogba and other football stars to launch the “Lace Up. Save Lives,” campaign where proceeds from the sale of red laces goes to help combat TB, Malaria and AIDS.