Abstract
Helicobacter pylori is a spiral-shaped gram-negative human pathogen. It can be considered as one of the most common causes of infections, particularly chronic gastritis in more than half of the worldwide population. The infections by H. pylori in adults as well as children continues to be a challenge for all gastroenterologists. This study aimed to investigate the prevalence of H. pylori among men, women and children, in addition to evaluate the relationship between the infection and age and gender in Duhok city -Iraq. The data of 200 patients were collected from both Nawroz Hospital and Roj Medical center in Duhok province, during the period from June 2023 to February 2024 and the data were analysed by (SPSS, 2019) with P. value of ≤0.05 was considered, while for age category factor, a significant variation (p<0.01) between observed and expected proportions was considered. This study revealed 126 positive cases (63%), included 64 (72.7%) male and 62 (55.4%) in females. Regarding the age category factor, it is also resulted in a significant variation (p<0.01) between observed and expected proportions according to the studied age categories and the medium age 19-39 years was the most exposed to the H. pylori infection with 62 (62.0%) infection positive, while 38 (38.0) as negative (P= 0.003). An equation was derived for prediction by H. pylori infections in the future, where the formula summarized the positive forecasting for infection as result of ≥ 1; while the healthy case will be less than 1.