Epidemiology of <i>Helicobacter pylori</i> infection

  • Olga Sjomina
    Institute of Clinical and Preventive Medicine Faculty of Medicine University of Latvia Riga Latvia
  • Jelizaveta Pavlova
    Institute of Clinical and Preventive Medicine Faculty of Medicine University of Latvia Riga Latvia
  • Yaron Niv
    Department of Gastroenterology Rabin Medical Center Tel Aviv University Tel Aviv Israel
  • Marcis Leja
    Institute of Clinical and Preventive Medicine Faculty of Medicine University of Latvia Riga Latvia

説明

<jats:title>Abstract</jats:title><jats:p>This review provides the most recent data concerning the epidemiology of <jats:italic>Helicobacter pylori</jats:italic> infection. Overall, the trend of declining prevalence of <jats:italic>H. pylori</jats:italic> infection is continuing, with major evidence available from studies in Europe. However, in some parts of the world, for example, in some countries in the Middle East, the prevalence has remained relatively stable. A number of systematic reviews and meta‐analyses have been published during the past year indicating the lowest prevalence rates of the infection in Oceania (24.4%), the highest in Africa (79.1%), and the global annual recurrence rate of <jats:italic>H. pylori</jats:italic> (4.3%). The recurrence rates were found to be directly related to the human development index and prevalence of infection. Several studies have addressed the correlation between <jats:italic>H. pylori</jats:italic> infection and sociodemographic conditions, source of drinking water and dietary factors. A hypothesis on the role of insects and yeasts in transmitting <jats:italic>H. pylori</jats:italic> has been suggested and addressed. <jats:italic>Helicobacter</jats:italic> sp. have been found in flow flies in Brazil. So far there is no evidence available that <jats:italic>H. pylori</jats:italic> may survive and persist on the outer body of the fly.</jats:p>

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