Diversitatea speciilor de H.pylori Și implicarea acestora în patologia digestivĂ

Abstract

The incidence of Helicobacter pylori infection is between 3-10% of the population per year in developing countries and 0.5% per year in developed countries. There are significant correlations between the prevalence of H. pylori infection, hygiene and living conditions of childhood. The natural reservoir of H. pylori infection is human, describes many possible routes of transmission: oral-oral, fecal-oral, gastro-oral, iatrogenic, aquatic and zoonotic Based on genetic differences, H. pylori have been classified in seven varieties, with different geographical distribution, prevalence specific ethnic groups. Suggested origin of H. pylori infection is in East Africa, from where it spread ago a hundred thousand years The first form of the disease, which manifests itself in all patients infected with H. pylori is active chronic gastritis. Later complications occur or developments such chronic gastritis to ulcer disease and gastric cancer.