| Sumario: | Introduction: Helicobacter pylori infection is highly prevalent and approximately half of the world's population is infected with this bacterium. Urea breath test (UBT) is the most important non-invasive method for diagnosing Helicobacter pylori. This study aimed to evaluate frequency of H. pylori infection in Salmas city, Iran using UBT. Materials and Method: In this case series study, 80 individuals with symptoms of nausea and vomiting, chronic gastritis and a history of positive IgG -confirmed through a checklist- were examined with UBT. Data was analyzed in Spss21 software using Pearson’s, Chi-square and t tests. Results: Of the 80 patients, 37 were infected with H. pylori (46%) and 43 had no infections (54%). The most frequently infected group was aged 51-60 years, while patients younger than 21 years old were the least frequently infected. The frequency of infection had no significant relationship with smoking and education level. Conclusion: Increasing the level of knowledge and health awareness associated with the factors involved in the development of the disease, the prevalence of H. pylori infection can be reduced to a desirable level.
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