Epidemiological and Clinical-Pathological Aspects of Helicobacter pylori Infection in Brazilian Children and Adults

Table 5

Prevalence of Helicobacter pylori in different studies.

Country city	Period (year)	Number of participants	Mean age–years (range)	Methods to diagnoses Hp	Local hospital-based/community-based	Prevalence of Hp (%)	Ref.
Brazil
São José Rio Preto	2009/ 2012	2406	47.5 ± 16.1	Urease	Public hospital	35.4	Current study
			15.2 ± 2.3			24.7
São Paulo		326	6.82 ± 4.07	Serological	São Paulo Hospital	35.6	15
São Paulo	2004	1406	<10 to >60	Urease	9 of July hospital	19.3	20
	2014	1130				14.1
Belo Horizonte	2007 to 2011	311	10.7 ± 3.3 (3 to 16)	Culture/urease/carbolfuchsin		37.6	23
Santiago/Chile						31.4
London/UK						7.4
Salvador	1997 to 2003, 2005	1104	6.8 ± 0.5 (4 to 11)	Serological	Community	28.7	21
Fortaleza	2000 to 2001	610	1 to 80	^13C-urea breath test	Community	62.9	14
Africa
Ghana	2014 to 2015	240	10.5 ± 2.7 (5 to 16)	Immunochromatographic assay (fecal)	Rural community	14.2	25
Taiwan
Lanyu Island	2008	796	45 ± 13.2 (12 to 89)	^13C-urea breath test	Community	72.1	19
Japan
7 geographic areas	1997 to 2013	11,470		Serological/urinary or stool	Health center/clinic	37.6/women 43.2/ men	26
Canada
Aklavik	2008	194	40.3 ± 17.1 (10 to 80)	Histology (Giemsa)	Community	66	28
USA
Population study	1988 to 1994	7465	20 to 70	Serological	Community	32.5	11

^∗ = data not available; Hp = Helicobacter pylori.