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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.
Confirmed by Minnesota Department of Health. 23 people became sick, 17 were hospitalized, and one person died. [53] 2017 Manhattan, New York, United States: Lenox Hill: TBD 7 1 14.3% [54] 2017 Las Vegas, Nevada, United States: Rio Hotel and Casino Water system 2 [54] 0 0 2017 Round Rock, Texas, United States: SpringHill Suites hotel Swimming ...
Legionnaires' disease is a form of atypical pneumonia caused by any species of Legionella bacteria, [3] quite often Legionella pneumophila.Signs and symptoms include cough, shortness of breath, high fever, muscle pains, and headaches. [2]
Pontiac fever is an acute, nonfatal respiratory disease caused by various species of Gram-negative bacteria in the genus Legionella.It causes a mild upper respiratory infection that resembles acute influenza.
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 ...
Legionella is considered to be pathogenic in humans and is one of the leading outbreaks found in constructed water systems. Because the biofilms are the source, countless outbreaks that originated from water systems and the ability of a species to form biofilms both can contribute to L. clemonensis’s pathogenicity . [ 7 ]
Legionella bacteria is spread through the air when an individual breathes in a mist that contains the bacteria. ... Legionnaire's disease is not contagious and cannot be spread from person to ...