There is no vaccine for H. pylori. There is no vaccine for Helicobacter pylori. Helicobacter pylori is mainly transmitted through the digestive tract, such as eating and dining together, so the most important thing to do to prevent Helicobacter pylori is to pay attention to the hygiene of tableware, and to avoid eating with the patient and sharing tableware. H. pylori infection can cause a variety of gastric diseases, such as gastritis, gastric ulcer, and even gastric cancer. Therefore, you should pay attention to prevention. If you are infected with H. pylori, you can use quadruple drug therapy, such as clarithromycin, amoxicillin, bismuth potassium citrate, omeprazole and so on for sterilization treatment. Specific medication should be under the guidance of a doctor.