“CDC WONDER (Wide-ranging ONline Data for Epidemiologic Research) is a powerful database tool that puts CDC health data at Web users’ fingertips. The easy-to-use, menu-driven system is free to public health professionals and the general public. CDC WONDER allows Web users to form interactive queries and create reports, charts, and maps of the results…Available subjects include mortality (deaths) and natality (births), cancer incidence, HIV and AIDS, behavioral risk factors, diabetes, and census data. A summary of data sets or collections helps users understand the nature of each data set. Some of the accessible data collections are not readily available elsewhere. Providing access to several years of data at once, the tool simplifies reviewing health trends over time.”