Legionnaires’ disease is a serious pneumonia caused by the Legionella bacteria.
People become infected when they inhale water droplets from a contaminated water source such as cooling towers, air conditioning systems and spa pools.
Early symptoms include muscle aches, tiredness, headaches, a dry cough and fever. Sometimes you may also have diarrhoea and develop confusion. The symptoms of pneumonia are a cough, shortness of breath and chest pain.
- Legionella and Legionnaires’ disease – HSE
- Legionella Control
- Legionnaires’ disease: guidance, data and analysis – gov.uk
- Legionnaires’ disease – NHS Choices
- Legionnaires’ disease – Patient info
- Legionnaires’ disease – BUPA
Please note the British Lung Foundation is not responsible for the accuracy or quality of the information found on the websites listed above.
If you're living with a lung condition, you can call our helpline for support or join one of our local support groups.
Find support in your area
Speak to our helpline
Call 03000 030 555
What we do
One person in five in the UK is affected by lung disease. Millions more are at risk. We’re here for every one of them.