how do you get legionnaires

Legionnaires’ disease is usually caught by breathing in tiny water droplets that contain Legionella bacteria, often from building water systems like showers, hot tubs, cooling towers, or humidifiers. It is not usually spread from person to person, and you generally do not get it from drinking water.

How it happens

The bacteria grow in warm water and can spread when that water becomes a mist or spray. Common sources include:

• Showerheads and taps.
• Hot tubs and spa pools.
• Cooling towers and air-cooling systems.
• Decorative fountains and other water features.

Who is more at risk

Most people exposed do not get sick, but risk is higher if you:

• Are 50 or older.
• Smoke or vape.
• Have chronic lung disease.
• Have diabetes, kidney disease, liver disease, cancer, or a weakened immune system.

Important note

If you mean Legionnaires’ disease , it can be serious and needs medical treatment. Symptoms often include fever, cough, chills, muscle aches, and shortness of breath, so prompt care matters.

Prevention

The main prevention is keeping water systems properly maintained so Legionella does not grow. That is especially important in large buildings, hotels, hospitals, and workplaces with complex plumbing or cooling systems.

Should I also give you the symptoms and when to see a doctor?