World AIDS Day is celebrated on 1 December every year to raise awareness about HIV/AIDS and to demonstrate international solidarity in the face of the pandemic. The day is an opportunity for public and private partners to disseminate information about the status of the pandemic and to encourage progress in HIV/AIDS prevention, treatment and care around the world, particularly in high prevalence countries.
Between 2011-2015, World AIDS Day has the theme: "Getting to zero: zero new HIV infections. Zero discrimination. Zero AIDS-related deaths".
About World AIDS Day Day 2013 (WHO)