''Helicobacter pylori'' infects humans causing gastritis as well as gastric and duodenal ulcers. It has also been associated with gastric adenocarcinoma in humans however There is no evidence for this in animals. | ''Helicobacter pylori'' infects humans causing gastritis as well as gastric and duodenal ulcers. It has also been associated with gastric adenocarcinoma in humans however There is no evidence for this in animals. |