legionella Articles

  • Legionella

    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 ...

  • Legionella Prevention

    Legionella Pneumophila Legionella has been identified as a major problem in multioccupancy buildings such as hotels, hospitals, hostels, schools, military establishments, nursing homes and office blocks. Worldwide thousands of people become seriously ill or die through infection by this potentially deadly disease. The costs if a buildings water system becomes infected can be substantial not only ...

  • Raising awareness to prevent legionella

    Understanding the dangers of contracting legionella Understanding certain facts about legionella is essential when selecting and furthermore maintaining emergency safety showers and eyebath/facewash units. Hughes equipment is designed to minimise the risk of legionella. “Employers are legally responsible for the health and safety of their employees and have a duty of care to the wider ...


    By Hughes Safety Showers

  • Managing Legionella in Facilities

    The Energy Institute (EI)’s Occupational Health and Hygiene Committee (OHHC) is soon to publish an updated, second edition of its technical guidance on Legionella risk management and control, and new technical guidance on the control of Legionella in cooling towers. Legionellosis, also known as ‘Legionnaires’ disease’ is a severe strain of pneumonia which was so ...


    By Energy Institute (EI)

  • Legionella Control Software for Success

    Legionella Control and Legionella Monitoring are changing. This article looks at how Konformance Legionella Control software automates L8 Logbook management including PPM schedules, as well as some of the other features. Konformance replaces Pulsion’s previous mobile data capture software, eSquiggles. eSquiggles had been built to customer specifications with a focus on improving asset ...


  • Legionella, water treatment and energy saving

    We can help improve health and safety and increase energy reduction. At the moment you probably keep water temperatures above 60°C and you probably undertake regular chemical or thermal water system treatments and shower head treatments, all to prevent the growth of Legionella in your water system. There are several reasons to do this including legal, safety, ...


    By Aquadron

  • Enumeration of Legionella pneumophila in cooling tower water systems

    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 water samples from 50 cooling towers were examined ...


    By Springer

  • Controlling scale in water systems helps prevent legionella

    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 Philadelphia. Later, the bacterium causing the illness ...

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

    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 can be misted and subsequently inhaled can lead to ...


    By Atlantic Environmental, Inc.

  • Neuthox removes legionella bacteria and biofilm - Case Study

    Hotel Terme della Sardegna (Sardinia, Italy) saves 12.000 € yearly by having a clean water system Danish Clean Water is the manufacturer of an ECA generator, which produces the disinfectant liquid, NEUTHOX. NEUTHOX is produced through an electrolysis process, where only electrical power, common salt and water is used, and is a clear 100 % biodegradable liquid which ...

  • 6 Things You Should Know About Legionella

    Just last August, about 120 people in the South Bronx were infected with Legionnaires’ Disease and 12 people died. At the time, up to 5 cooling towers in the area tested positive for Legionella, a fatal bacteria that grows in warm, damp environments and can spread once contaminated water has become aerosolized and the vapor is inhaled. In this post, we’ll be discussing where ...

  • Cooling tower legionella pneumophila study CDC

    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 systems, outbreaks are usually a result of ...


    By Zentox Corporation

  • Inactivation of Legionella with the DiaCell® water treatment technology

    Legionella constitutes a new and increasingly stronger con-tamination risk many of water systems, such as cooling towers or hot sanitary water distribution networks. European certifica-tions impose concentration limits of 1’000 Cfu/mL [1], waters with higher levels must be treated. At levels higher than 100’000 Cfu/mL the installations must be stopped and disin-fected immediately. Many ...


  • Amoebae and Legionella pneumophila in saline environments

    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 and from sediments from six sites in the Great ...


    By IWA Publishing

  • Strategies for the reduction of Legionella in biological treatment systems

    A community-wide outbreak of Legionnaire's disease occurred in Warstein, Germany, in August 2013. The epidemic strain, Legionella pneumophila Serogruppe 1, was isolated from an industrial wastewater stream entering the municipal wastewater treatment plant (WWTP) in Wartein, the WWTP itself, the river Wäster and air/water samples from an industrial cooling system 3 km downstream of the WWTP. ...


    By IWA Publishing

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

    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 ...

  • Preventative control of legionella through real-time bioburden testing

    Abstract: Of the 485,000 annual cases of pneumonia-like sickness in the USA, approximately 15% are attributed to Legionnaire’s Disease. This typically results in  health care costs of over $600 million (1, 2, 3). For the most part, these incidents can be prevented through effective monitoring and treatment. Since Legionella thrive within microbial biofilms and ...


    By LuminUltra Technologies Ltd.

  • Surveillance of Legionella species in hospital water systems: the significance of detection method for environmental surveillance data

    Monitoring of hospital water systems to prevent and control nosocomial legionellosis is important from a public health perspective. This study was conducted to survey the prevalence of Legionella contamination of hospital waters. A total of 44 water samples from the hot-water system of 11 hospitals were tested for Legionella by a culture method and a nested polymerase chain ...


    By IWA Publishing

  • Chemical disinfection of Legionella in hot water systems biofilm: a pilot-scale 1 study

    Legionella bacteria encounter optimum growing conditions in hot water systems and cooling towers. A pilot-scale 1 unit was built in order to study the biofilm disinfection. It consisted of two identical loops, one used as a control and the other as a ‘Test Loop’. A combination of a bio-detergent and a biocide (hydrogen peroxide + peracetic acid) was applied in the Test Loop three times under the ...


    By IWA Publishing

  • Proteomic regulation during Legionella pneumophila biofilm development: decrease of virulence factors and enhancement of response to oxidative stress

    Legionella pneumophila (L. pneumophila) is a Gram-negative bacterium, which can be found worldwide in aquatic environments. It tends to persist because it is often protected within biofilms or amoebae. L. pneumophila biofilms have a major impact on water systems, making the understanding of the bacterial physiological adaptation in biofilms a fundamental ...


    By IWA Publishing

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