Colonization with <i>cag</i>A-Positive <i>Helicobacter pylori</i> Strains Inversely Associated with Reflux Esophagitis and Barrett’s Esophagus

Abstract

Patients with reflux esophagitis and Barrett's esophagus have a significantly lower prevalence of H. pylori colonization than controls, in particular of the cagA(+) type. These data suggest that colonization with cagA(+) H. pylori strains may be protective against the development of GERD