[Clinical manifestations of Legionella pneumonia in hematology patients].

Aim: To detect the most common clinical manifestations of Legionella pneumonia (LP) in immunocompromized patients.

Subjects And Methods: Clinical manifestations, the results of investigation of bronchoalveolar lavage fluid (BALF) and urine, and the data of lung computed tomography (CT) were studied in patients with blood system diseases and acute respiratory failure (ARF).

Results: The diagnosis of LP was verified in 8 (10.

Optical investigation of the natural electron doping in thin MoS2 films deposited on dielectric substrates.

Two-dimensional (2D) compounds provide unique building blocks for novel layered devices and hybrid photonic structures. However, large surface-to-volume ratio in thin films enhances the significance of surface interactions and charging effects requiring new understanding. Here we use micro-photoluminescence (PL) and ultrasonic force microscopy to explore the influence of the dielectric environment on optical properties of a few monolayer MoS2 films.

[Features of legionella biofilm formation in artificial and natural water systems].

Aim: Study the ability to form monospecies and associative biofilms as a characteristic oflegionella strains and features of organization of natural legionella biofilms in potentially dangerous water systems.

Materials And Methods: Comparative evaluation ofthe ability of 28 strains of Legionella spp. to form biofilms was determined in water according to previously developed procedure.

[Prevalence of glucosyl transferase Lgt among Legionella pneumophila strains isolated from various sources].

Aim: Determine various members of Lgt glucosyl transferase family among microorganisms of Legionellaceae genus from museum collection and legionellae strains recently isolated in the Russian Federation and Germany.

Materials And Methods: Presence of 3 types of glucosyl transferase were determined in 73 strains of L. pneumophila and Legionella spp.

[Examination of the contamination aetiological agent of legionellosis in the water supply systems of medical treatment facilities].

This study considers the features of colonization of water distribution systems by Legionella in large multi-type health-care facilities in Moscow-city, Russia. The investigation of 16 pavilions in 5 multi-type health-care facilities had found the hith level of hot water systems contaminated by Legionella pneumophila (68%), including the risk units. Among the different species of Legionella pneumophila, circulating in hot water systems of health-care facilities, the following strains had prevailed: the serogroup 6 (44%), 5 (26%) and 1 (13%).