This book provides the current updated knowledge on all essential aspects in the rapidly evolving area of Helicobacter pylori research. H. pylori is a class I carcinogen and one of the most common infections in the world. While most people colonized by H. pylori will remain asymptomatic, up to 20 % of them may develop serious gastroduodenal disease such as peptic ulcers or gastric cancer. H. py…