نتایج جستجو برای: legionella
تعداد نتایج: 4966 فیلتر نتایج به سال:
Background and purpose: Water microelements can influence the growth and colonization of Legionella and infections associated with these bacteria. This research investigated Legionella contamination of water regarding microelements, alkalinity and hardness in selected hospitals of Tehran. Materials and methods: Hundred-fifty samples with 4 L volume were collected from cold and warm water sys...
Background: Legionella species are ubiquitous and naturally found in lakes, rivers, streams and hot springs, and other water resources. The present study aimed to investigate the prevalence of Legionella species in water resources of Iran by a systematic review and meta-analysis.Methods: In search of papers relevant to the prevalence of Legionella in water resources of Iran, the scientific info...
outbreaks of legionellosis may be a side effect of institution-water treatment. however, the long-term outcomes and the predictive factors of legionella prevalence in such systems have still not been fully studied. this study was therefore conducted to investigate the prevalence of legionella spp. and to evaluate the role of bacteriological water quality parameters on its prevalence and removal...
background community acquired pneumonia (cap) is a common health concern and the main mortality factor worldwide. nowadays, legionella pneumophila is one of the most common microorganisms responsible for cap. we designed this study to investigate the antigen test as a useful, simple and rapid test for early diagnosis of legionella pneumophila. materials and methods we enrolled 118 patients (32 ...
Background and Objectives: Legionella are gram-negative bacteria widely dispersed in natural and man-made water sources. Some Legionella species are pathogenic and could cause respiratory infections. Cultivation technique is the conventional method for the detection of Legionella spp. in aquatic samples. However, the method has low sensitivity and require prolonged incubation period. Theref...
Introduction: Legionella Pneumophila bacteria is known as one of the most important nosocomial infections and the most common cause of death in patients. This study was aimed to identify Legionella Pneumophila bacteria in hospital water supply systems. Material and Methods: This descriptive cross-sectional study was performed to identify Legionella pneumophila in hot and cold-water systems of i...
introduction: the suspected water samples contaminated with legionella were enriched with acanthamoebae. small numbers of bacteria (not detectable by culture) can be multiplied in amoebae up to culturable level in co-culture condition. the conventional culture method for legionnaires' disease bacterium always suffers from low sensitivity. this co-culture method can significantly improve culture...
Several species of Legionella cause Legionnaires' disease (LD). Infection may occur through inhalation of Legionella or amoebal vesicles. The reservoirs of Legionella are water, soil, potting soil and compost. Some species of free-living amoebae (FLA) that are naturally present in water and soil were described as hosts for Legionella. This study aimed to understand whether or not the composting...
Background and purpose: Nosocomial outbreaks of legionnaires’ diseases are usually related to contamination of water sources. This survey investigated the frequency of mip gene in cold and warm water taps and water containers of infant incubators containing legionella pneumophila in hospitals of Guilan province, Iran. Materials and methods: This cross-sectional study used 140 samples. They wer...
Studies on Legionella show a continuum from environment to human disease. Legionellosis is caused by Legionella species acquired from environmental sources, principally water sources such as cooling towers, where Legionella grows intracellularly in protozoa within biofilms. Aquatic biofilms, which are widespread not only in nature, but also in medical and dental devices, are ecological niches i...
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