Members of Thalassemia and AIDS prevention society, a non-government organisation, take part in a candlelight rally on the eve of World AIDS Day in the eastern Indian city of Kolkata November 30, 2008. Official figures show that more than 10 percent of intravenous drug users in India are infected with HIV, a higher prevalence than among prostitutes. The country's overall HIV/AIDS prevalence rate is about 0.9 percent for those aged between 15 and 49. REUTERS/Parth Sanyal (INDIA)