Helicobacter pylori can be spread through oral transmission, oral and fecal transmission, and iatrogenic infections. Oral transmission is the most common way of transmission of Helicobacter pylori. Helicobacter pylori is mainly parasitized in the epithelial tissue of the human stomach, but some pathogenic bacteria will enter the esophagus, oral cavity and other parts with the contraction and spasm of the stomach. When healthy people communicate with the sick or eat together, the mouth foam carrying pathogenic bacteria will enter the digestive tract through the mouth and upper respiratory system, causing cross-infection. Some pathogenic bacteria will enter the lower digestive tract tissue along with the metabolites in the stomach and be excreted from the body. Once healthy people come into contact with the excreta of sick patients, Helicobacter pylori infection can also occur. Iatrogenic infection is mainly due to the inadequate cleaning and disinfection measures of gastroscopy equipment, and some pathogens that have not been killed, so that the gastroscopy method enters the stomach and eventually causes infection of pathogens.
13C ubt breath test is a gold standard for detect h.pylori infection,also is the most common and popular method to diagnosis h.pylori.
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