HIV surveillance, estimates, monitoring and evaluation
Strategic information on the epidemic and the response is essential to guide programme planning and implementation, sustain commitment, and ensure accountability. WHO and UNAIDS develop standards, guidelines and tools to improve HIV surveillance and generate the best estimates of the HIV epidemic in a country. Using various sources of data, including HIV prevalence in different population groups and household surveys, WHO and UNAIDS work with national AIDS programmes to generate and publish country and global updates on a regular basis.
