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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]
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.
The legionella bacteria responsible for the disease lives and multiplies in water areas like hot tubs, air conditioners, mist sprayers in grocery store produce departments, and water systems.
To inform the water safety plan, the undertaking of a site specific legionella risk assessment is often recommended in the first instance. [36] The legionella risk assessment identifies the hazards, the level of risk they pose and provides recommendations of control measures to put place within the overarching water safety plan.
An illness that has stricken 11 people in Argentina, killing four, may have been the result of Legionella, the bacteria that causes Legionnaires’ disease,
Legionella is a common bacteria found in the environment and in water systems. It can cause a severe type of pneumonia - Legionnaires' disease - which impacts lungs, or a mild flu-like illness ...
Year City Venue Source Cases Deaths Fatality rate Notes 1965: Washington, D.C., United States St. Elizabeths Hospital: Unknown: 94: 16: 17%: The outbreak occurred in 1965, but was not identified as legionnaires' disease until saved blood serum was exposed to bacterial samples from the 1976 Philadelphia Legionnaires' disease outbreak.
According to the CDC, Legionella bacteria can cause a serious type of pneumonia, known as Legionnaires disease or Pontiac fever. Legionella bacteria is spread through the air when an individual ...