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Legionella is a genus of gram-negative bacteria that can be seen using a silver stain or grown in a special media that contains cysteine, an amino acid.It is known to cause legionellosis [3] (all illnesses caused by Legionella) including a pneumonia-type illness called Legionnaires' disease and a mild flu-like illness called Pontiac fever. [3]
A legionellosis is any disease caused by Legionella, including Legionnaires' disease (a pneumonia) and Pontiac fever (a related upper respiratory tract infection), [10] but Legionnaires' disease is the most common, so mentions of legionellosis often refer to Legionnaires' disease. The bacterium is found naturally in fresh water. [4]
Legionella pneumophila, the primary causative agent for Legionnaire's disease, is an aerobic, pleomorphic, flagellated, non-spore-forming, Gram-negative bacterium. [ 1 ] [ 2 ] L. pneumophila is a intracellular parasite that preferentially infects soil amoebae and freshwater protozoa for replication.
Legionella is found naturally in freshwater environments, like lakes and streams, but can become a health concern when it grows and spreads in constructed water systems.
Legionnaires' disease is caused by inhaling water droplets contaminated with the Legionella bacteria. The bacteria can grow in water droplets from showers, hot tubs, faucets, cooling towers ...
Legionnaires’ disease is a type of pneumonia caused by Legionella bacteria. The bacteria can grow in any area where water sits for a long time, according to Dr. Andrew Handel, a pediatric ...
Almost all natural water sources contain Legionella and their presence should not be taken as an indication of a problem. The tabled figures are for total aerobic plate count, cfu/ml at 30 °C (minimum 48 hours incubation) with colony count determined by the pour plate method according to ISO 6222(21) or spread plate method on yeast extract agar.
Legionella longbeachae is one species of the family Legionellaceae. It was first isolated from a patient in Long Beach, California. It was first isolated from a patient in Long Beach, California. It is found predominantly in potting soil and compost .