legionella pneumophila Articles

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Legionnaires’ disease (Legionella pneumophila)-sometimes deadly, sometimes not!

by Atlantic Environmental, Inc.  (Sep. 10, 2010)

More than 90% of Legionella cases are caused by Legionella pneumophila, a bacterium that thrives in warm to hot water.  Pipes, tanks, faucets, showerheads, and hot water heaters are ideal breeding grounds for L. pneumophila.  Since infection with Legionella occurs through inhaling the bacterium, any activity in which contaminated water ...

Legionella pneumophila serogroup 3 prevalence in drinking water survey in Israel (2003–2007)

by IWA Publishing  (Dec. 1, 2010)

A 5-year survey (2003 to 2007) was carried out on various drinking water sources in Israel for detection of Legionella spp. The most frequently isolated species was L. pneumophila serogroup 3 (prevalence 60.44±5.6) followed by L. pneumophila serogroup 1 (26.98±5.2) and other serogroups and unidentified species (12.6±9.8). L. pneumophila serogroup ...


by Independent International Consultants Ltd (IIC)  (Feb. 16, 2006)

Nomenclature Legionnaires' disease a pneumonia caused by any serogroup or sub-group of Legionella pneumophila Legionella pneumonia a pneumonia caused by any species of Legionella Pontiac Fever an acute, self-limiting, “flu-like” illness caused by certain species of Legionella Legionellosis any human ...

Investigation of Legionella pneumophila in Drinking Water

by American Water Works Association (AWWA)  (Feb. 1, 1988)

An investigation of Legionella pneumophila in drinking water systems and home plumbing appurtenances was conducted in two phases. In phase 1, 68 water samples for L.pneumophila analysis were collected from hot and cold kitchen sink faucets in homes on 17 community water systems. No L. pneumophila organisms were isolated from any of these samples. ...

Controlling Legionella Using Copper-Silver Ionization

by American Water Works Association (AWWA)  (Sep. 1, 1998)

This article describes a study in which four nursing homes were surveyed to determine the extent to which potable hot water systems were colonized by Legionella pneumophila and to measure microbial and chemical factors related to legionellae contamination. One of the four nursing homes was subsequently equipped with a commercially available ...

Amoebae and Legionella pneumophila in saline environments

by IWA Publishing  (Mar. 1, 2011)

Amoeboid protists that harbor bacterial pathogens are of significant interest as potential reservoirs of disease-causing organisms in the environment, but little is known about them in marine and other saline environments. We enriched amoeba cultures from sediments from four sites in the New England estuarine system of Mt. Hope Bay, Massachusetts ...

Cooling tower legionella pneumophila study CDC

by Zentox Corporation  (Apr. 21, 2012)

Abstract Since the late 1970s, there have been many small and large outbreaks of Legionnaires’ disease. Most of these outbreaks have been traced to either cooling tower water systems or potable water systems. Although the bacteria most often associated with Legionnair’s disease, Legionella pneumophila, is present in many waater ...

Enumeration of Legionella pneumophila in cooling tower water systems

by Springer  (Jan. 1, 2005)

Legionella pneumophila, the causative agent of Legionnaires disease, is known to colonise and frequently grow in cooling tower waters. Disease is acquired by inhaling aerosol contaminated by legionellae. Determination of the count of Legionella pneumophila in cooling tower waters may, therefore, be useful for risk assessment. In our survey, 103 ...

Controlling scale in water systems helps prevent legionella

by Scalewatcher North America Inc  (Sep. 18, 2012)

The Legionella bacterium, Legionella Pneumophila (LP), the fundamental agent of Legionnaire’s Disease, is a water-based organism, which causes infection when inhaled in an aerosol form. Legionnaires' Disease acquired its name in 1976 when an outbreak of pneumonia occurred among persons attending a convention of the American Legion in ...

A pcr-based method for monitoring legionella pneumophila in water samples detects viable but noncultivable legionellae that can recover their cultivability

by American Society for Microbiology  (Aug. 1, 2008)

Legionella pneumophila is the causative agent of Legionnaires' disease. This bacterium is ubiquitous in aqueous environments and uses amoebae as an intracellular replicative niche. Real-time PCR has been developed for rapid detection of Legionella DNA in water samples. In addition to culturable bacteria, this method may also detect dead and ...

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