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.
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 .
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.
Legionella species are aquatic organisms and typically inhabit freshwater environments with humans being accidental hosts. Most isolates of Legionella have been from air-conditioning cooling towers and potable-water distribution systems, but they can also be found in other thermally polluted water sources such as air conditioners, spa equipment ...
At both 37 and 26 °C, strain D5610 was found to grow more slowly than L. pneumophila Philadelphia 1, and it also formed a significant amount of pigment that was less produced. [6] These attributes suggest that this isolation is a standard Legionella species, for which the name Legionella clemsonensis was used.
Legionella bozemanae is a Gram-negative bacterium in the family Legionellaceae. Its type strain is WIGA (=ATCC 33217). Its type strain is WIGA (=ATCC 33217). It is associated with human pneumonia .