[THE PATHOGENIC POTENTIAL OF MORAXELLA CATARRHALIS AND STAPHYLOCOCCUS EPIDERMIDIS UNDER INFLAMMATORY PROCESSES OF UPPER RESPIRATORY TRACTS].

The frequent isolation from biological material of Moraxella catarrhalis under bronchitis and pneumonia and Staphilococcus epidermidis under rhinitis and sinusitis requires profound investigation offactors ofpathogenicity ofthe mentioned microorganisms. The genetic and phenotypic markers of virulence of strains M. catarrhalis and S.

Typing and clustering of Yersinia pseudotuberculosis isolates by restriction fragment length polymorphism analysis using insertion sequences.

Yersinia pseudotuberculosis is an enteropathogen that has an animal reservoir and causes human infections, mostly in temperate and cold countries. Most of the methods previously used to subdivide Y. pseudotuberculosis were performed on small numbers of isolates from a specific geographical area.

[Anti-pertussis immunity in children in the cities of Northwestern Federal District with various population].

Aim: Evaluate the state of immunity against pertussis in children living in St. Petersburg and regional centers of Northwestern Federal District (NFD).

Materials And Methods: The level of anti-pertussis antibodies by EIA and agglutinin reaction (AR) was studied in 419 children living in St.

[Molecular-biological characteristic of Yersinia enterocolitica circulating in various regions of Russian Federation].

Aim: Complex characteristic by phenotype signs and main virulence genes of Yersinia enterocolitica strains circulating in various regions of Russian Federation.

Materials And Methods: 46 strains of Y. enterocolitica of 2 - 4 biotypes and 401 strains of Y.