A sex worker holds a placard during an AIDS awareness rally in Siliguri

A sex worker holds a placard during an AIDS awareness rally to mark the World AIDS Day in the northeastern Indian city of Siliguri December 1, 2008. HIV/AIDS infections will spread like “bushfire” in parts of India if the country fails to check a spike in the number of intravenous drug users, the United Nations AIDS agency said last month. REUTERS/Rupak De Chowdhuri (INDIA)