Helicobacter Pylori Infection

(H. Pylori Infection)


Helicobacter pylori (H. pylori) is a type of bacteria that can infect the stomach and intestines. It can lead to:
Gastric Ulcer
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This condition occurs when an infected person passes the bacteria to someone else. The bacteria are spread through:

Risk Factors

Factors that increase your risk of H. pylori infection include being in:


In most cases, there are not any symptoms. However, if someone develops an ulcer or gastritis, symptoms may include:


Your doctor will ask about your symptoms and medical history. A physical exam will be done.
Tests may include:


Talk with your doctor about the best treatment plan for you. Your doctor may recommend:


To reduce your chances of getting H. pylori infection, take these steps:


American College of Gastroenterology

American Gastroenterological Association


Canadian Association of Gastroenterology

Health Canada


Helicobacter pylori. Centers for Disease Control and Prevention website. Available at: Accessed May 13, 2013.

Helicobacter pylori infection. EBSCO DynaMed website. Available at: Updated April 29, 2013. Accessed May 14, 2013.

Travelers health helicobacter pylori. Centers for Disease Control and Prevention website. Available at: Updated July 1, 2011. Accessed May 14, 2013.

Weyermann M, Rothenbacher D, Brenner H. Acquisition of Helicobacter pylori infection in early childhood: independent contributions of infected mothers, fathers, and siblings. Am J Gastroenterol. 2009;104(1):182-189.

9/22/2014 DynaMed's Systematic Literature Surveillance Fuccio L, Zagari RM, Eusebi LH. Meta-analysis: Can Helicobacter pylori eradication treatment reduce the risk for gastric cancer? Ann Intern Med. 2009;151(2):121-128.

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