You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is H. pylori true about - and explain in detail?
Ans. is 'd' i.e., Treatment causes regression of gastric lymphoma "Infection of the stomach by the bacterium helicobacter pylori induces the development of gastric MALT (mucosa -associated lymphoid tissue) lymphomas. This association is suppoed by evidence that patients treated with antibiotics to eradicate H. pylori have regression of their MALT lymphoma". About other options . H pylori is a gram negative (not gram positive) spiral bacillus. . It is a bacteria not protozoa. . H. pylori colonization induces chronic superficial gastritis. It is due to primary colonization, not reinfection. After eradication, reinfection rate causing chronic gastritis is less than .5% per year. . It causes mucosal damage of duodenum due to increased gastric acid secretion, which induces protective gastric metaplasia in the duodenum. The duodenum becomes inflammed and then ulcerated.