This study is divided into two parts:

Part 1: An interventional study, with a pre-post study design to determinate the grade of knowledge of established GC risk factors.

Part 2: An observational study to know impact on prevalence and infection eradication of H. pylori

Part 1: to determinate the grade of knowledge of established GC risk factors and identification of attitudes about, GC screening programs at baseline, prior to the intervention though an educational program.

Part 2: to generate an H. pylori registry, to know its impact on prevalence and infection eradication rate at 6th, 12th, 24th and at Month 36th.

Part A: Educational Intervention Inclusion criteria

• Subjects >18 years old, from EU and CELAC countries participating in this study.
• Has given and signed the IC to participate in this study. Exclusion criteria
• Subjects who have received some prior preparation (Cancer Gastric Information).
• Subjects who have previous Knowledge in Gastric Cancer (Example, near relatives who have suffered Gastric Cancer

Part B: H. pylori Register Inclusion criteria

• Subjects ≥18 years old diagnose from H. pylori infection and treated at participant sites
• Has given and signed the IC. Exclusion criteria
• Subjects with chronic gastritis without confirmed diagnose of H. pylori infection, pathologically of by urease test.
• Patient's with CG diagnosis (including gastroesophageal junction cancer).

Part 1:

Subjects >18 years old whom able to answer the questions structured in the survey.

Part 2:

Subjects >18 years old diagnose from H. pylori infection