GIDEON Guide to Surveys summarizes the status of all published epidemiological surveys.79,602 surveys are included of which 49,392 are Prevalence surveys and 30,194 are Seroprevalence surveys. Charts are designed to allow users to quickly scan and compare surveys according to year, region, setting, study population and other parameters. Linked references are also displayed where available.Chapters are arranged alphabetically, by disease, and include:Disease nameDisease synonymsSurvey summary: total numbers of surveys for diseaseWorldwide: Surveys which encompass a group of countries or regionsCountry: Survey lists by country including details and referencesThis is one in a series of GIDEON ebooks which explore all individual infectious diseases, drugs, vaccines, outbreaks, surveys and pathogens in every country of the world. Data are based on the GIDEON web application (gideononline.com) which relies on standard textbooks and peer-review journals, supplemented by an ongoing search of the medical literature.