In 1983, Robin Warren, a pathologist in Perth, reported the presence of “curved bacterium” in the mucosal layer of the gastric biopsy specimen. Together with Barry Marshall, they subsequently isolated the organism from the gastric biopsy specimens and named it Campylobacter pyloridis (C. pylori) (1). Later reclassified as Helicobacter pylori (H. pylori) (2). Prevalence of H. pylori, a worldwide infection, varies greatly among countries and among population groups within the same country (3). The pattern of infection is an early childhood acquisition of H. pylori (30%-50%) that reaches over 90% during adulthood in developing countries. This has been attributed to the poor socioeconomic status and overcrowded conditions.