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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 spp. enter the lungs either by aspiration of contaminated water or inhalation of aerosolized contaminated water or soil. In the lung, the bacteria are consumed by macrophages , a type of white blood cell , inside of which the Legionella bacteria multiply, causing the death of the macrophage.
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.
To study the mechanism that intracellular parasites use to obtain nutrients, Legionella pneumophila, a bacterial facultative intracellular parasite, has been used as a model. It is known that Legionella pneumophila obtains nutrients by promoting host proteasomal degradation.
Legionella sp. under ultraviolet illumination Scientific classification; Domain: Bacteria: Phylum: Pseudomonadota: Class: Gammaproteobacteria: Order: Legionellales: Families and genera Legionellaceae Legionella Coxiellaceae Aquicella Coxiella Diplorickettsia Rickettsiella "Ca. Berkiella" [1] "Ca. Fiscibacter" [1] "Ca.
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 ...
Large hotel with solar water heating system for spa and domestic hot water. A month before the deaths, local government authorities may have known about the problem, but were accused of not alerting the public to avoid disruption of the tourism industry. [29] 2012: Edinburgh, Scotland: South west of Edinburgh: Possibly cooling towers: 92: 4: 3%
Legionella anisa is traditionally detected using the same culture methods as described for Legionella. However, some research suggests L. anisa may require a co-culture method that accounts for the close relationship with amoebae. When present in a sample but still contained within an amoeba host, the plating method may return false-negative ...