Rare disease claims lives of one-in-10 victims
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Legionnaires' disease is a type of pneumonia which is caused by the legionella bacteria found in water systems.
It thrives in warm and stagnant water, such as that found in showers, whirlpool spas and fountains.
The disease is spread through the air from water sources which have been contaminated.
All ages can be affected, however it mainly occurs in people over the age of 50.
Those more at risk include smokers, heavy drinkers, people with serious illnesses or those whose immune systems have been weakened.
After an incubation period, symptoms of pneumonia -- such as coughing, fever and a sharp chest pain -- can be identified.
Legionnaires' disease is not very common, with less than 10 cases reported each year in Ireland, according to the National Disease Surveillance Centre (NDSC).
However, it is believed that many more cases may occur that are not diagnosed as it is difficult to distinguish from other types of pneumonia.
In previously healthy people, Legionnaires' disease causes death in about one in 10 cases.
