Guidance

Legionnaires' disease: clinical case definitions

Information on case definitions and category of exposure for confirmed and probable cases, clusters and outbreaks of Legionnaires’ disease.

Documents

Details

This document provides information for health professionals who are dealing with a confirmed or probable case of Legionnaires’ disease.

Information is provided on:

  • clinical and microbiological case definitions
  • category of exposure
  • epidemiological definitions of clusters and outbreaks
  • travel-associated cases

If a cluster of travel-associated Legionnaires’ disease is identified, the risk assessment and findings should be documented using the travel-associated cluster reporting forms.

Updates to this page

Published 20 April 2016
Last updated 6 February 2020 + show all updates
  1. Updated with new guidance and link to reporting forms.

  2. First published.

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