title: [What do we mean by the concept of principles of investigation?].
abstract: It is a review of basic epidemiological techniques used for investigation of an outbreak of epidemic. The author defines types of epidemics and characterizes conditions of their occurrence and progression in spatial and temporal ramifications. The basic types of epidemiological research used in epidemiological analysis such as cohort and case-control study are characterized and exemplified with application to the outbreak of epidemic. The article provides in the conclusion basic logistic and organizational principles for such an investigation.
authors.affiliation: Zakład Epidemiologii Państwowego Zakładu Higieny w Warszawie.
authors.forename: A
authors.initials: A
authors.lastname: Zieliński
mesh_terms: D001424:Bacterial Infections / Q000453:epidemiology*; D004196:Disease Outbreaks; D004812:Epidemiologic Methods; D006801:Humans