Understanding the Causes of a Legionella Outbreak

Legionellosis, or legionella, is a severe form of pneumonia. Noticeable symptoms of legionella include fever, difficulty breathing, coughing, and other complications as discussed in the video. According to the Legionella outbreak response company, some people even develop fatal infections after inhaling the bacteria.

Legionella bacteria is the leading cause of legionella disease. In normal circumstances, legionella bacteria exist in freshwater bodies such as streams and lakes.


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The more harmful form of legionella bacteria exists in artificial water systems. These include water features, decorative water fountains, cooling heads, hot water tanks, showerheads, or hot tubs.

When the bacteria grow and multiply in the water bodies, they cause a legionella disease outbreak. By breathing in tiny water droplets that contain legionella bacteria, people become infected with the disease. Waterborne legionella bacteria is the main cause of legionella disease outbreaks.

Aspiration of drinking water that contains legionella bacteria also causes a legionella outbreak. People suffering from swallowing difficulties are at a higher risk. Aspiration usually happens when water gets into the lungs. Unfortunately, people with underlying health risks, persons above 50+ years, and smokers are at high risk of getting the disease.

Legionella bacteria also exist in soil. Mainly exists in potting mixes or compost. A person gets legionella disease when they inhale a bit of the contaminated soil. The disease also spreads when a person touches their mouth with contaminated hands.

From the above-mentioned causes, note that legionella disease does not spread from one person to another. The legionella outbreak response company advises that you see a doctor promptly if you have been exposed. Immediate treatment is critical for people at high risk.

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