H. Plyori Incidence Rate


To understand the incidence rate of H. pylori in the United States and throughout the world.

Early Findings


  • "The [H. pylori] infection is generally acquired during childhood but can remain asymptomatic" into adulthood.
  • H. pylori can lead to a number of conditions such as "chronic gastritis, gastric cancer, gastric adenocarcinoma, mucosa-associated lymphoid tissue (MALT), lymphoma, and peptic ulcer disease".
  • "The mode of transmission for H. pylori is not certainly known; however, epidemiological studies strongly support person-to-person transmission and fecal-oral and oral-oral routes."


  • Throughout the world, over 50 percent of the population is infected with the H. pylori bacteria.
  • The infection is more common in developing nations, with the rate reaching 90 percent among children in some countries, compared to between 1.8 and 65 percent in developed countries.
  • In the country of Kampala, the incidence rate is 43.3 percent overall.
  • Overall, Africa has the highest incidence rate of H. pylori, while Oceania has the lowest.
  • "Among individual countries, the prevalence of H pylori infection varied from as low as 18.9 percent in Switzerland...to 87.7 percent in Nigeria."

United States

  • In the U.S., the H. pylori incidence rate was higher in the African American, Hispanic, and elderly communities as of 2010.
  • Specifically, the incidence rate was 60 percent in the Hispanic community and 54 percent among African Americans, compared to 20 percent in white Americans.
  • Additionally, "estimated prevalence is 20 percent for people younger than 30 years and 50 percent for those older than 60 years" in the United States.

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