WebMD Answers
Prevention is aimed at improving the design and maintenance of cooling towers and plumbing systems. The goal is limiting the growth and aerosolization of Legionella organisms.
During outbreaks, health investigators seek to identify the source of disease transmission and recommend appropriate prevention and control measures, such as decontamination of the water source.
Detailed guidelines for the prevention of Legionnaires' disease both in hospitals with no identified cases (primary prevention) and in hospitals with reported cases (secondary prevention) have been published and are available in the U.S. from the CDC.
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