How antibiotic resistances could change Helicobacter pylori treatment: A matter of geography?

Table 1 Epidemiological studies of the last five years from five world continents regarding Helicobacter pylori infection prevalence

Country	Ref.	Helicobacter pylori positivity	Test	Population
Southern Europe
Italy	Dore et al[1], 2012	13.3%	Serology	Children
Portugal	Bastos et al[2], 2013	84.2%	Serology	Adults
Northern Europe
Sweden	Thjodleifsson et al[3], 2007	11%	Serology	Adults
Norway	Bakkevold[4], 2010	51%	Serology	Adults
Eastern Europe
Czech Republic	Bureš[5], 2012	23.5%	Urea breath test	Combined data
Russia	Svarval’ et al[6], 2011	40.48%	Serology	Children-adolescents
America
United States	Patterson et al[7], 2012	17.1%	Serology	Adults
South America (combined data)	Porras et al[8], 2013	79.4%	Urea breath test	Adults
Asia
Saudi Arabia	Hanafi et al[9], 2013	28.3%	Serology	Children, adolescents
South Korea	Baik et al[10], 2012	55.7%	Serology	Adults
Africa
Nigeria	Etukudo et al[11], 2012	30.9%	Serology	Children
Morocco	Benajah et al[12], 2013	75.5%	Biopsy	Adults
Oceania
Australia	Pandeya et al[13], 2011	15.5%	Serology	Combined data
New Zealand	Fawcett et al[14], 2005	6.2%	Serology	Children, adolescents