objective: among the members of legionellaceae, legionella pneumophila is involved in 95% of cases of severe pneumonia. isolation of the causative agent from bronchoalveolar lavage (bal) fluid specimen is a delicate process and also time-consuming. moreover, it has been shown that some legionella strains may be viable but cannot be cultured. the aim of this study was comparison of culture and p...

Legionella pneumophila is the pathogen responsible for severe pneumonia known as Legionnaires’ disease. Legionella can live under varied stress conditions, especially in cold environments, and is common in many artificial environments. In this study, the antimicrobial activity of biogenic silver nanoparticles, prepared using the culture supernatant of Klebsiella pneumoniae, was evaluated agains...

legionella pneumophila ( l. pneumophila ) is a gram-negative bacterium which causes ‎legionnaires’ disease as well pontiac fever. the legionella infections in patients suffering from ‎neutropenia- as a common complication of cancer chemotherapy- can distribute rapidly. we ‎aimed to detection of l. pneumophila in haematological malignancy suffering patients with ‎nuetropenic fever by targeting t...

UNLABELLED Garden soils were investigated as reservoirs and potential sources of pathogenic Legionella bacteria. Legionella bacteria were detected in 22 of 177 garden soil samples (12%) by amoebal coculture. Of these 22 Legionella-positive soil samples, seven contained Legionella pneumophila Several other species were found, including the pathogenic Legionella longbeachae (4 gardens) and Legion...

Legionella anisa is one of the most frequent species of Legionella other than Legionella pneumophila in the environment and may be hospital acquired in rare cases. We found that L. anisa may mask water contamination by L. pneumophila, suggesting that there is a risk of L. pneumophila infection in immunocompromised patients if water is found to be contaminated with Legionella species other than ...

The genus Legionella comprises over 60 species, which are important human pathogens. Secretion systems in Legionella pneumophila have been studied extensively because of the essential role of protein secretion in bacterial infection. However, there are few reports describing the secretion systems in non-L. pneumophila species. In this study, we analyzed the distribution of secretion systems in ...

ba ckground: legionella pneumophila is  a  dangerous pathogenic bacterium can cause serious infectious diseases especially in hospitalized immuno-compromised patients. this bacterium is shown to be resistant against different antibiotics. resistance against a wide range of antibiotics is usually mediated by efflux pump in bacteria. efflux pumps are proteinaceous transporters localized in the cy...