Materials

Legionnaires’ Disease [1 page]
This fact sheet describes what Legionnaires’ disease is, its symptoms, how it’s spread and treated, and who is at increased risk.
This fact sheet is also available in Spanish [1 page].

What Clinicians Need to Know about Legionnaires’ Disease [2 pages]
This 2-page fact sheet describes diagnosis, testing, treatment, reporting, etiology, transmission, risk factors, common sources of infection, and prevention of Legionnaires’ disease.

Vital Signs: Legionnaires’ Disease [6.24 MB, 4 pages]
This 4-page fact sheet describes the most common settings for Legionnaires’ disease outbreaks that CDC investigated between 2000 through 2014, explains the reasons for those outbreaks occurring, and provides tips for what can be done to help prevent Legionnaires’ disease. Also see Vital Signs.

This fact sheet is also available in Spanish [3.68 MB, 4 pages].

Vital Signs: Legionnaires’ Disease [3.55 MB, 4 pages]
This 4-page fact sheet describes the problem of Legionnaires’ disease in healthcare facilities and how effective water management programs can prevent it, with an emphasis on establishing a team approach. Also see Vital Signs.

This fact sheet is also available in Spanish [2.75 MB, 4 pages].

Environmental Investigation Videos
Designed for public and environmental health professionals, CDC developed six instructional videos to explain various environmental aspects of legionellosis outbreak investigations.

Illustration of Legionella pneumophila, the bacterium that causes the majority of Legionnaires’ disease cases and outbreaks.
Download this graphic (22.8 MB,300 dpi resolution)

Cooling towers, which are often part of the air conditioning systems of large buildings, are a common source of Legionella exposure in outbreaks. Cooling towers need to be properly maintained in order to prevent Legionnaires’ disease.
Download this graphic (5.37 MB, 96 dpi resolution)

Water samples from a building experiencing a Legionnaires’ disease outbreak are unpacked at CDC’s Legionella Laboratory.
Download this graphic (24.3 MB, 300 dpi resolution)

A CDC microbiologist pours water samples from a building experiencing a Legionnaires’ disease outbreak into a filtration system to test for Legionella.
Download this graphic (30 MB, 300 dpi resolution)

Legionella pneumophila, a bacterium that can cause Legionnaires’ disease, growing on specialized microbiological media (BCYE).
Download this graphic (17.3 MB, 300 dpi resolution)