United Nations -- Data on the health indicators related to the
Millennium Development Goals is available at http://unstats.un.org/unsd/mi/mi_goals.asp
World Bank -- The World Bank provides time series data for Health in its database, the World Development Indicators (WDI) and a separate health, nutrition and population data base at the same site.
World Health Organization-- WHO provides access to searchable data bases and other data sources on disease at http://www.who.intresearch/en/
Gapminder -- Gapminder is an innovative data presentation web site which provides dynamic views of data changes over time using bubble graphs. Graphs are available for economic, population, health (including HIV/AIDS), environmental, agricultural and information technology data. Raw data can be downloaded from the site and a desktop version of the software is available free. Users can customize graphs using existing data, but cannot add new data. Much of the data used is from the World Bank and UN organizations. Gapminder is at http://www.gapminder.org .
US Census Bureau -- The US Census Bureau has for many years been collecting data on HIV/AIDS surveys in developing countries. The Bureau provides free access to this data base, The HIV/AIDS Surveillance Data Base at http://www.census.gov/population/international/data/hiv/. . Data can be downloaded in either ASCII or Lotus format.
UNAIDS-- UNAIDS has a main data page giving access to its reports and data bases at http://www.unaids.org/en/dataanalysis. The organization also provides a downloadable spreadsheet of time series data as an .xls spreadsheet at http://www.unaids.org/en/dataanalysis/datatools/aidsinfo. The data for different indicators is on different worksheets and the cells contain mixed text and numeric data (in many of the cells and the text characters must be cleaned out and the cells formatted as numeric before the data can be used for calculations). To download the spreadsheet click on the tiny "XLS" label on the top right of the "People living with HIV (all ages)" table. Users looking for specific data by country can use the AIDSinfo Online Database http://www.aidsinfoonline.org/devinfo/libraries/aspx/Home.aspx. For database users,a download of all of the data in the AIDSinfo Online Database is available at the "Download data in CSV format" label on the same page. The full download contains more than 200,000 individual records.