Students form a giant red ribbon during a publicity campaign to promote awareness about HIV/AIDS in Taipei, November 30, 2012.

Children walk with activists in a torch light rally ahead of World AIDS Day in Kolkata, India, November 30, 2012. The activists demanded monthly pensions and free ration facilities for sex workers and HIV/AIDS-affected people.

HIV-infected men, who volunteer to help other HIV patients, perform during a meeting with Red Cross officials at Ditan hospital in Beijing, November 30, 2012, the eve of World AIDS Day. An estimated 780,000 people live with HIV in China.

Fireworks explode over the Sydney Opera House, November 30, 2012, as it is bathed in red light to mark World AIDS Day.

Secretary of State Hillary Clinton greets Florence Ngobeni-Allen, ambassador for the Elizabeth Glaser Pediatric AIDS Foundation, November 29, 2012, during a ceremony in recognition of World AIDS Day.

People hold candles as they mark the upcoming World AIDS Day in Kyiv, Ukraine, November 29, 2012.

People walk near a red ribbon sand sculpture created by Indian sand artist Sudarshan Patnaik on a beach in the eastern Indian state of Odisha, November 30, 2012.

A large red ribbon is installed on the North Portico of the White House in Washington, November 30, 2012.