There are on average about 10 cases of Legionnaires Disease reported each year in Ireland. It can affect all age groups but it is more common in those over 50 years of age. Smokers, heavy drinkers and those with chronic illnesses whose immune systems are weakened are also at greater risk.

Legionella which causes Legionnaires Disease is a common bacterium which may be found in many environmental water sources and  is often associated with hot and cold water distribution systems, air conditioning systems, condensers, humidifiers, water taps, showerheads, water fountains, water features, whirlpool baths, Jacuzzis, spas, respiratory therapy equipment, fire sprinkler systems, misting systems, vehicle washes, etc.

The incubation period for Legionnaire Disease is usually about 2-10 days with symptoms appearing 5-6 days after infection but may take longer.

The illness usually starts with flu-like symptoms including fever, tiredness, headache, and muscle pains. This is followed by a dry cough and breathing difficulties that may progress to a severe pneumonia. Some people also develop diarrhoea or may become confused. Death occurs in 10-15% of otherwise healthy people and may be higher in some groups of patients.

Environmental Health Officers are often involved in investigating the source of a case of Legionnaires Disease and have published an information leaflet on the causes, symptoms and general precautions to be taken to avoid the risk of the illness.

Please click here to read and download the Legionnaires Disease Information Leaflet .

For further information and a more technical guide on Legionnaires Disease please log onto Health Protection Surveillance Centre website www.hpsc.ie

Click here to contact your Environmental Health Officer