Since the beginning of the epidemic, almost 60 million people have been infected with HIV and 25 million people have died of HIV-related causes.
In 2008, some 33.4 million [31.1 million-35.8 million] people living with HIV, 2.7 million [2.4 million-3.0 million] new infections and 2 million [1.7 million-2.4 million] AIDS-related deaths.
In 2008, around 430,000 [240,000-610,000] children were born with HIV, bringing to 2.1 million [1.2 million-2.9 million] the total number of children under 15 living with HIV.
Young people account for around 40% of all new adult (15+) HIV infections worldwide.
Sub-Saharan Africa is the region most affected and is home to 67% of all people living with HIV worldwide and 91% of all new infections among children.
In sub-Saharan Africa the epidemic has orphaned more than 14 million children.
For more detailed information on the global epidemiology, please click on the map below;