RESUMEN
Determine the prevalence of helicobacter pylori infection in patients native of the west center of tunisia and having ulcerous duodenal disease: Descriptive study including 106 patients affected by no complicated duodenal ulcer having had one gastroscopy in the internal medecine department at Sidi Bouzid Hospital. Helicobacter pylori infection is defined by visualization of bacterium on gastric takings. the mean age of our patients was of 45.8 years with a light male predominance. Prevalence of helicobacter pylori infection was 97.1%. Antral location of the infection was observed in 56.6% of cases. Fundus and antral location of the infection was observed in the remaining cases. All patients have antral chronicle gastritis. In our study, the prevalence of helicobacter pylori in patients having duodenal ulcer is very high, justifying attitude therapeutics anti helicobacter pylori without systematic search of bacterium