Pneumonia is an infection of the lung alveoli caused by bacteria, viruses or fungi. It is one of the leading causes of morbidity and mortality worldwide, representing a clinical and economic burden and a global public health ...
Sep 12, 2023
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The death toll from an outbreak of Legionnaire's disease in Rzeszow, southeast Poland, has risen to five, local authorities said Thursday as they try to detect the contamination source.
Aug 24, 2023
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Hospital water systems are a significant source of Legionella, resulting in the potentially fatal Legionnaires' disease—but Flinders University researchers have proven simple maintenance that involves running hot water ...
Jun 19, 2023
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A new study of domestic and hospital drinking water systems found Legionella in 41% of samples—with Flinders University researchers making a key connection between the pathogen's co-existence with a "host" microorganism ...
Jan 13, 2023
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Hospitals and homes are havens for germs and disease—but a well-regulated hot water system can prevent the spread of waterborne pathogens, including an emerging infectious disease problem from "superbugs" which can be resistant ...
Jul 20, 2022
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Legionellosis or Legionnaires' disease affected more than 1,800 people in France in 2019 and caused 160 deaths. This emerging disease is caused by Legionella pneumophila, an environmental bacterium that thrives in hot water ...
Feb 18, 2022
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(HealthDay)—Health officials say they are trying to track down the source of 10 reported cases of Legionnaires' disease within a one-mile radius in a Long Island, N.Y., neighborhood.
Oct 18, 2021
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(HealthDay)—The U.S. Centers for Disease Control and Prevention informed employees that office space it rents in the Atlanta area would be closed after Legionella, the bacteria that causes legionnaires disease, was found ...
Aug 11, 2020
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Many businesses are closed as a result of the coronavirus pandemic, and some building managers have shut off water and air conditioning to conserve resources. Unfortunately, warmth and lack of clean water flow can contribute ...
Apr 30, 2020
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Cases of Legionnaires' disease reached a record high in 2018—a more than eight-fold increase since the numbers began to climb nearly two decades ago.
Nov 6, 2019
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Legionella is a pathogenic Gram negative bacterium, including species that cause legionellosis or Legionnaires' disease, most notably L. pneumophila. It may be readily visualized with a silver stain.
Legionella is common in many environments, with at least 50 species and 70 serogroups identified. The side-chains of the cell wall carry the bases responsible for the somatic antigen specificity of these organisms. The chemical composition of these side chains both with respect to components as well as arrangement of the different sugars determines the nature of the somatic or O antigen determinants, which are essential means of serologically classifying many Gram-negative bacteria.
Legionella acquired its name after a July, 1976 outbreak of a then-unknown "mystery disease" sickened 221 persons, causing 34 deaths. The outbreak was first noticed among people attending a convention of the American Legion - an association of U.S. military veterans. The convention in question occurred in Philadelphia during the U.S. Bicentennial year. This epidemic among U.S. war veterans, occurring in the same city as – and within days of the 200th anniversary of – the signing of the Declaration of Independence, was widely publicized and caused great concern in the United States. On January 18, 1977 the causative agent was identified as a previously unknown bacterium, subsequently named Legionella. See Legionnaires' Disease for full details.
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