1.It is generally believed that Helicobacter pylori only inhabits humans, and the infected person is currently the only definite source of infection.
2. At present, it is believed that Helicobacter pylori is mainly transmitted through the oral-oral or fecal-oral route between people. In addition, endoscopic contamination can also cause Helicobacter pylori cross-infection.
3. The population is generally susceptible to Helicobacter pylori. The infection rate in natural populations worldwide is about 50%, but the infection rate varies greatly among populations and races in different countries and regions. The Hp infection rate is generally 50% to 80% in developing countries, 25% to 50% in developed countries, and about 60% in my country on average. Poverty, poor sanitation, and overcrowding are high risk factors for Hp infection. The Hp infection rate of medical staff in the gastroscopy room is higher than that of the general population. With age, the Hp infection rate increases.