نتایج جستجو برای: legionella
تعداد نتایج: 4966 فیلتر نتایج به سال:
Representatives of the genus Legionella were detected by use of a real-time PCR method in all water samples collected directly after treatment from 16 surface water (SW) supplies prior to postdisinfection and from 81 groundwater (GW) supplies. Legionella concentrations ranged from 1.1 10 to 7.8 10 cells liter 1 and were significantly higher in SW treated with multiple barriers at 4°C than in GW...
The aim of this research was the isolation of Legionella spp. from domestic water supply networks in the Prefecture of Arta. A total of 100 water samples, from 25 houses, were collected. Half of the samples concerned the cold water and half the hot water supply. Purpose was to detect colonization of the water networks with Legionella spp. >500 cfu/L by using the method of filtration (ISO 11731)...
There is disagreement among microbiologists about whether Legionella requires a protozoan host in order to replicate. This research sought to determine where in biofilm Legionellae are found and whether all biofilm associated Legionella would be located within protozoan hosts. While it is accepted that Legionella colonizes biofilm, its life cycle and nutritional fastidiousness suggest that Legi...
Healthcare facilities (HF) represent an at-risk environment for legionellosis transmission occurring after inhalation of contaminated aerosols. In general, the control of water is preferred to that of air because, to date, there are no standardized sampling protocols. Legionella air contamination was investigated in the bathrooms of 11 HF by active sampling (Surface Air System and Coriolis®μ) a...
Legipid(®) Legionella Fast Detection is a test based on combined magnetic immunocapture and enzyme-immunoassay (CEIA) for the detection of Legionella in water. The test is based on the use of anti-Legionella antibodies immobilized on magnetic microspheres. Target microorganism is preconcentrated by filtration. Immunomagnetic analysis is applied on these preconcentrated water samples in a final ...
In 1986, we encountered the first case of Legionella micdadei pneumonia in Japan. In the follow-up study to determine the infection route of L. micdadei, we isolated Brevundimonas vesicularis from the shower hose of the patient�s home. This motivated us to explore the symbiosis between B. vesicularis and Legionella in this study. B. vesicularis type strain, B. vesicularis Kobe strain, Legionell...
Monochloramine disinfection of municipal water supplies is associated with decreased risk for Legionnaires' disease. We conducted a 2-year, prospective, environmental study to evaluate whether converting from chlorine to monochloramine for water disinfection would decrease Legionella colonization of hot water systems. Water and biofilm samples from 53 buildings were collected for Legionella cul...
Cases of Legionnaires' disease associated with biological treatment plants (BTPs) have been reported in six countries between 1997 and 2010. However, knowledge about the occurrence of Legionella in BTPs is scarce. Hence, we undertook a qualitative and quantitative screening for Legionella in BTPs treating waste water from municipalities and industries in Norway, to assess the transmission poten...
BACKGROUND In this study we estimated the presence of Legionella species, viable but non-culturable (VBNC), in hospital water networks. We also evaluated the time and load of Legionella appearance in samples found negative using the standard culture method. METHODS A total of 42 samples was obtained from the tap water of five hospital buildings. The samples were tested for Legionella by the s...
TO THE EDITOR—We commend Murdoch et al for the interesting report on the utility of routine systematic use of polymerase chain reaction (PCR) testing in Legionnaires’ disease [1]. Routine PCR testing of respiratory specimens of all patients with pneumonia, or immunocompromised patients or those who had a Legionella urinary antigen ordered, yielded 114 cases over 4 years of predominantly Legione...
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