Overview of Helicobacter pylori Infection, Prevalence, Risk Factors, and Its Prevention

Table 1

Global data on H. pylori infection.

Category	Prevalence	Reference
Infected people	4.4 billion (by 2015)	[29]
Developing countries	50.8%	[30]
Developed countries	34.7%	[30]
H. pylori rate in females	42.7%	[30]
H. pylori rate in males	46.3%	[30]
H. pylori rate in children	32.6%	[30]
Africa	70.1%	[11]
South Asia (Pakistan)	81.0%	[11]
South Asia (India)	63.5%	[11]
Western Asia	77.2%	[11]
North America	20%–30%	[13]
United States of America	30%–40%	[13]