What Is Legionnaires Disease?
2. Legionnaires Disease Causes
The bacterium L. pneumophila is a naturally occurring microorganism in freshwater bodies such as rivers and lakes. It can also persist in soil. In its natural environment, the bacteria do not typically present a problem. It becomes a human health hazard when it enters into and proliferates in human-made water systems.
A majority of outbreaks occur in large buildings, though it is possible to contract the disease from home plumbing systems. Exposure is frequently linked to cooling towers, hot tubs and whirlpools, swimming and birthing pools, decorative fountains, hot water tanks and heaters and drinking water.
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