High Prevalence of Multiple Strain Colonization of Helicobacter pylori in Korean Patients: DNA Diversity Among Clinical Isolates from the Gastric Corpus, Antrum and Duodenum

Abstract

These results suggested that many of the H. pylori-infected Korean patients were actually colonized with mixed populations of different H. pylori strains and that the prevalence of duodenal H. pylori expression of the cagA and/or vacA gene was not correlated with the development of duodenal ulcer in Korean patients.