- About UNAIDS
- Our work
- Targets and commitments
- 2011 Political Declaration: Targets and elimination commitments
- Reducing sexual transmission
- Preventing HIV among drug users
- Eliminating new HIV infections among children
- 15 million accessing treatment
- Avoiding TB deaths
- Closing the resource gap
- Eliminating gender inequalities
- Eliminating stigma and discrimination
- Eliminating travel restrictions
- Strengthening HIV integration
- 2011 Political Declaration: Targets and elimination commitments
Know your Epidemic (Epidemiology)
UNAIDS and WHO modify their estimates as new data, research and analyses emerge. As advances are made to the methodology of data collection and surveillance, the estimates of numbers of people living with HIV are revised to reflect these improvements. Revisions are also made retrospectively for each year to allow for a more accurate assessment of the epidemic's evolution over time. For this reason, it is inaccurate to draw conclusions by comparing the estimates from one report to another.
Recent Reports and Data
The most recently published reports and information on the epidemiology of AIDS are found in the links below.
- World AIDS Day Report 2012
- Progress report 2011: Global HIV/AIDS response
- HIV estimates with uncertainty bounds: 2009 | 2001, 2009 | 1990 - 2009
- Epidemiological fact sheets by country
- Methods for creating estimates
- AIDSinfo
- Global Reports
Presentations
These presentations provide countries with more information on the epidemiology of AIDS.
Working Group on Global HIV/AIDS and STI Surveillance
A joint effort between UNAIDS and WHO, this working group is the main coordination and implementation mechanism to compile and improve the quality of data needed for informed decision-making and planning at national, regional and global levels. More
Country reports on HIV estimates
Country estimation reports can be viewed here.
Contacts
For any questions and/or feedback regarding epidemiology, please contact estimates@unaids.org