RT Journal Article SR Electronic T1 Ecology of Helicobacter pylori in Peru: infection rates in coastal, high altitude, and jungle communities. The Gastrointestinal Physiology Working Group of the Cayetano Heredia and the Johns Hopkins University. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 604 OP 605 DO 10.1136/gut.33.5.604 VO 33 IS 5 YR 1992 UL http://gut.bmj.com/content/33/5/604.abstract AB We have examined endoscopic clinic patients in three widely different geographic regions of Peru (the coast, the Sierra of the Andes Mountains, and the Amazon jungle) for the presence of Helicobacter pylori infection associated with active gastritis. The overall rates of infection were high (80% or greater) in all three zones and rates for men were approximately 10% higher than for women in the same zone. Men and women in the Sierra and jungle areas had significantly higher rates of infection than did those on the coast. There was no significant difference between the three populations with respect to the relationship between infection and grade of gastritis.