title: Analysis, interpretation, use, and dissemination of surveillance information.
abstract: Surveillance data lay the groundwork for effective large-scale health actions. Sometimes, however, it is hard to obtain surveillance data, to determine the reliability of collected data, or to ensure that the data will be used to maximum advantage. This article provides a basic review of these three problems and ways to approach them, drawing illustrative examples from various sources, including the author's own experience.
mesh_terms: D002648:Child; D006801:Humans; D009518:New York; D011159:Population Surveillance; D014481:United States