The goal of surveillance is to collect and combine information on HIV/AIDS infections, behaviors and characteristics of individuals at risk. Countries can track the epidemic and direct HIV funding to where it is needed the most.

A variety of data collection and surveillance information - both nationally and internationally - on HIV/AIDS can be found through a number of sites.

• Centers for Disease HIV Statistics and Data
• US National Prevention Information Network (NPIN)- HIV Surveillance
• US Census Bureau - HIV Surveillance
• World Health Organization - HIV Surveillance and Data
• Eurosurveillance - Europe's journal on infectious disease and epidemiology
• Public Health Agency of Canada - HIV Surveillance
• UN Aids Surveillance

KaiserEDU.org offers useful information and narrated tutorials:

• Understanding HIV/AIDS surveillance data in the U.S. 
• Current state of the global HIV/AIDS epidemic