A giant red ribbon is hung on the front of the White House on World Aids Day, on December 1, 2014.
AIDS activists light a group of candles placed in the shape of a red ribbon during an event marking World AIDS Day in Manila on December 1, 2012.
Balloons are released next to a sea of candles at the World Aids Day memorial in Berlin on November 30, 2011.
Volunteers from Red Cross China take part in an AIDS-awareness event on World AIDS Day in Beijing, December 1, 2009.
A group of Chinese men gather to collect the free condoms distributed to mark the World's AIDS Day in Fujian province on December 1, 2010.
Indian villagers hold oil lamps as they surround a huge AIDS symbol on the beach at Nalsarovar, some 60 km from Ahmedabad, on November 30, 2009 the eve of World Aids Day.
HIV positive women make red ribbons, the universal symbol of awareness and support for those living with HIV, at a support center in Bangalore on the eve of World AIDS Day on November 30, 2012.
A Pakistani technician takes samples in a laboratory alongside a ribbon promoting World Aids Day in Islamabad on November 30, 2013.