title: [Concept, historical development and present elements of epidemiologic surveys].
mesh_terms: D004196:Disease Outbreaks / Q000266:history; D004812:Epidemiologic Methods; D004813:Epidemiology / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D008800:Mexico
vernacular_title: Conceptualización, evolución histórica y elementos actuales de la vigilancia epidemiológica.