Twelve years ago Lucy Ash investigated Ukraine's fight against HIV infection, which was mainly caused by injecting drug users. After the Orange Revolution in late 2004, the government promised to do everything it could to fight the disease and the situation seemed to improve. But now Ukraine has the second highest infection rate in Europe, surpassed only by Russia. Around the world, other countries are managing to reduce rates of HIV infection and AIDS-related deaths. Lucy Ash travels to Kyiv and Odessa to see why fighting HIV is so difficult in Ukraine.