Helicobacter pylori is classified as a gram-negative, spiral and microaerophilic bacterium and considered one of the most common causes of gastric infections worldwide. It was isolated from gastric biopsy specimens from patients with chronic gastritis and peptic ulcers in 1983. Non-pylori Helicobacter species may occasionally colonize the human stomach causing gastritis, but the prevalence is unknown. As such, in this compilation antral biopsies from 484 patients were examined for H. pylori by culture and quantitative polymerase chain reaction. In addition, the biopsies were examined for...