Search results
Results from the WOW.Com Content Network
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 number of cases that occur globally is not known. [1] Legionnaires' disease is the cause of an estimated 2–9% of pneumonia cases that are acquired outside of a hospital. [1] An estimated 8,000 to 18,000 cases a year in the United States require hospitalization. [9] Outbreaks of disease account for a minority of cases.
Legionella anisa is a Gram-negative bacterium, one of more than 40 species in the family Legionellaceae. After Legionella pneumophila , this species has been isolated most frequently from water samples.
After being stained with Sudan B, many of the cells did not have fat deposits. Gas-liquid chromatography-mass spectrometry show that all known species of Legionella contain large amounts of branched-chain fatty acids. [8] DNA that was unlabeled from BL-540 was tested against labeled DNAs from the six recognized Legionella species.
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.
They comprise two families, typified by Legionella and Coxiella, both of which include notable pathogens. For example, Q fever is caused by Coxiella burnetii and Legionella pneumophila causes Legionnaires' disease [3] [4] and Pontiac fever. [5] [6] [7]
Like other Legionella species, L. cherrii does not form spores and is an aerobic, Gram-negative bacterium. [1] The genome size was sequenced using Illumina HiSeq 2000 and found to be 3.7 Mb. [ 7 ] Scaffold assembly was conducted using whole genome shotgun sequencing and 13 scaffolds were found in the complete genome. [ 7 ]