The purpose of the study To estimate the prevalence of markers of herpesvirus infections and pneumocystosis in patients of the hematological department. To identify whether the contamination of hematological patients with hepatitis B and C (HBV, HCV) affects on the activation of opportunistic infections (OIs). Materials and methods There were examined 94 patients of the hematological department, including 48 patients with markers of HBV infection and 46 cases without them. Obtained results Markers of acute OIs (simple herpes virus type 1- 6,4%, EBV - 14,9%, CMV - 6,4%, and Human Herpesvirus 6- 13,8% and 33,0% of pneumocystosis) in hematological patients were determined more frequently than in donors. Comparative analysis of the data revealed the excess of the proportion of cases with markers of acute HHV-6 infection in hematological HBV patients in comparison with a group of hematologic patients without markers of HBV infection (22,9% against 4,4%, p
The specific features of Legionella colonization of water supply systems were studied in the large healthcare facilities (HCF) of Moscow. Examination of 16 buildings of 5 Moscow multidisciplinary HCFs, including their risk-group units, revealed the high level (68%) of Legionella pneumophila contamination of hot water supply systems. Among the Legionella pneumophila strains circulating in the hot water supply systems of Moscow HCFs, there was a preponderance of its serogroup 6 (44%), 5 (26%), and 1 (13%) strains. The findings suggest that it is necessary to arrange a set of prophylactic measures for microbiological monitoring and protection of water systems in the HCFs, which are aimed at preventing nosocomial legionellosis.
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