Helicobacter pylori is an important human pathogen, implicated in the
pathogenesis of peptic ulcer disease, gastric cancer, and perhaps also
in other non-gastrointestinal disease. There is little doubt that in
peptic ulcer disease at least, there is a strong argument for its erad
ication on both clinical and economic terms. The majority of subjects
infected with Helicobacter pylori never develop clinically overt disea
se, and it is this group that the clinical and financial benefit of er
adication needs to be closely examined.