Helicobacter pylori isolates from proximal and distal stomach of patients never treated and already treated show genetic variability and discordant antibiotic resistance.

Abstract excerpt

INTRODUCTION: The treatment failure of Helicobacter pylori (H. pylori) infection may be mainly because of antibiotic resistance and the presence of a mixed infection in the same patient. AIM: To investigate the incidence of mixed infection and discordant antibiotic resistance in patients never treated and already treated. MATERIALS AND METHODS: Susceptibility test to amoxicillin, rifabutin, tinidazole,...

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