[Molecular-genetic typing of Helicobacter pylori: applied aspects of diagnosis and treatment of duodenal ulcer].

: In this article genetic features of Helicobacter pylori in duodenal ulcer patients are studied, also a comparative estimation of this microorganism's genetic features is made in various Helicobacter pylori-positive conditions. In the article necessity of carrying out genetic typing of Helicobacter pylori for revealing potential microorganism virulence, strain resistance to claritromycin is proved that allows to define a forecast of a current of disease and to carry out individual selection of a therapy.