The natural history of Helicobacter pylori infection in humans is not well established.
We aimed to systematically review the literature on the natural acquisition and spontaneous elimination of the infection and its clinical consequences.
A broad-based MEDLINE and Current Contents search was performed to identify all related publications between 1986 and 1996.
Abstracts from recent major conferences that provided adequate data were also included.
The prevalence of H. pylori infection increases with age, the rates being significantly lower in developed countries than in developing countries.
However, the overall prevalence is decreasing in both developing and developed countries, which probably is responsible for the steep decline of gastric cancer in some industrialized countries.
The natural acquisition of H. pylori infection occurs, for the most part, in childhood, and it appears that the incidence is currently slightly higher in developing countries than in industrialized countries.
Spontaneous elimination of the infection also occurs, especially in young children and the elderly.
The route of transmission continues to be uncertain, with the best evidence favoring both the gastro-oral and fecal-oral routes.
Low socioeconomic status is a major risk factor for acquisition of the infection.
Genetics probably plays a role in the acquisition or clearance of H. pylori infection in individuals. (...)
Mots-clés Pascal : Gastrite, Campylobactériose, Bactériose, Infection, Helicobacter pylori, Spirillaceae, Spirillales, Bactérie, Contamination, Mode infection, Evolution, Elimination, Spontané, Facteur risque, Article synthèse, Homme, Appareil digestif pathologie, Estomac pathologie, Bactériologie
Mots-clés Pascal anglais : Gastritis, Campylobacter infection, Bacteriosis, Infection, Helicobacter pylori, Spirillaceae, Spirillales, Bacteria, Contamination, Infection modality, Evolution, Elimination, Spontaneous, Risk factor, Review, Human, Digestive diseases, Gastric disease, Bacteriology
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0534415
Code Inist : 002B05B02F. Création : 13/02/1998.