[Epidemiological survey of a single-case focus of acute enteric infections].

The aim, tasks and stages of the epidemiological survey of a single-cased focus of infection, taking into account present-day specific features of the epidemiology of acute enteric infections, have been formulated. The technical approaches to the detection of the source, routes, factors and conditions of the causative agent transmission are given. The patterns of the conclusion on the epidemiological survey of the focus are given.