United Nations Population Information Network
A guide to population information on UN system web sites

Joint UN Programme on HIV/AIDS (UNAIDS)
   The leading advocate for worldwide action against HIV/AIDS. Its mission is to lead, strengthen and support an expanded response to the epidemic that will prevent the spread of HIV, provide care and support for those infected and affected, reduce the vulnerability of individuals and communities to HIV/AIDS, and alleviate the socioeconomic and human impact of the epidemic.
Report on the Global HIV/AIDS Epidemic
  AIDS is a public health crisis, a development crisis, and in some parts of the world a security crisis as well. The epidemic will have a profound impact on future rates of infant, child and maternal mortality, life expectancy and economic growth. AIDS is unique in its devastating impact on the social, economic and demographic underpinnings of development.
  Data and studies addressing the determinants of the epidemic, estimates and projections, and surveillance and reporting