Gastric disease Helicobacter pylori can infect people. Helicobacter pylori is a kind of bacteria parasitized in the stomach, which may enter the body through food, drinking water, etc., and grow and multiply on the gastric mucosa to form a bacterial colony, which causes great corrosion of the gastric mucosa, and ultimately leads to gastric diseases, and it may also develop into gastric ulcers, which increase the chances of gastric cancer. The bacterium is highly contagious and tends to spread through mouth to mouth. H. pylori infection is more commonly transmitted through cross-infection among family members, mainly due to the shared use of dishes and other means of transmission. If you are infected with H. pylori, it is important to cooperate with your doctor and take medication. To avoid contagion, it is important to use communal chopsticks and utensils when eating with others.