A large collection of statistical data and research reports from the United States Centers for Disease Control and Prevention. You can use CDC Wonder to:

• Search for and read published documents on public health concerns, including reports, recommendations and guidelines, articles and statistical research data published by CDC, as well as reference materials and bibliographies on health-related topics
• Query numeric data sets on CDC's mainframe and other computers, via "fill-in-the blank" web pages. Public-use data sets about mortality (deaths), cancer incidence, HIV and AIDS, TB, natality (births), census data and many other topics are available for query, and the requested data are readily summarized and analyzed.