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 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. Once the macrophage dies, the bacteria are ...
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.
A picture taken on May 17, 2019 shows an antigen test for quick detection and a culture of the Legionella pneumophila bacteria at the UZ Gent hospital. Since May 3rd at least 18 people were ...
The Legionella bacteria that are smooth, colorless to blue or grey will become more white and filamentous over time and appear green and yellow fluorescent under UV light. The colony surface is typically smooth but may look like it has strains that give it a fried egg type of appearance when looked at under a microscope. Storing BCYE plates:
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 ...
Like all Pseudomonadota, they are Gram-negative. [2] 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 .