Legionella bacterium causes pneumonia-like illnesses often called legionellosis. Lochgoilhead and Pontiac fevers are less critical forms of legionellosis. Severe legionella infection causes Legionnaires' disease. It may possibly affect any gentleman or woman pursuing inhalation of the legionella bacteria. Even while most instances of legionella infection respond to antibiotics, in some situations the bacterial infection is normally fatal. Elderly people today, men and women suffering from chronic respiratory illness or kidney ailments, smokers, heavy drinkers and folks with impaired immune method have got a incredibly increased danger of developing Legionnaires' disease.