Helicobacter pylori infection in symptomatic HIV-seropositive and -seronegative patients: a case-control study.

We conducted a case-control study in a Greek hospital to evaluate the prevalence and morbidity of Helicobacter pylori in HIV-infected patients. HIV-seropositive patients were infected by H. pylori less often than HIV-seronegative controls [12/58 (20.