Helicobacter pylori transmission to children. Because H. pylori is considered an infectious disease, transmission is primarily through oral and fecal-oral transmission. In humans, H. pylori is most commonly transmitted by adults who are close to the child before the age of 10. Grandparents, grandparents, and other people close to the child may have a 20% chance of transmission. Therefore, children are the most susceptible group of H. pylori. From the point of view of H. pylori prevention, it is still important to start with children, and there is a consensus and regulation on H. pylori in children. Generally speaking, H. pylori testing is not recommended for children before the age of 14 for a variety of special reasons. The reason is that even if a child is tested, compliance with treatment is relatively poor; 10-20% of children are self-healing after the age of 18 during their development. H. pylori infection in children causes relatively fewer serious diseases than in adults. For these reasons, H. pylori testing is not currently recommended for children before the age of 10.