We report a case of Meckel's diverticulum with heterotopic gastric body mucosa, active gastritis in the heterotopic mucosa and dense colonisation by Campylobacter pylori. This case, together with four identical cases recently reported, and a further case with C. pylori colonisation of heterotopic gastric mucosa in the rectum, shows that C. pylori obviously traverses the length of the Gl tract--a fact that makes the faecal-oral route of infection probable.