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Table 1 Prevalence of H. pylori infection in different populations of the world.

From: Helicobacter pylori: a poor man's gut pathogen?

Country N studied cases Age range
(years)
Pre-valence Ref.
Developing Countries1:     
Bangladesh 181 20-44 92% [95]
Brazil     
- rural 40 (children) < 20 77.5% - rural
  164 (adults) 20-90 84.7% [96]
- urban 363 > 20 63.4% [97]
- poor urban community 204 18-80 80% [98]
Colombia (rural) 684 2-9 69% [99]
China     
- Southern China 1727 N/A 44.2% [9]
- Hong Kong 397 36-65 58.6% [100]
- Changle of Fujan 1456   80.4% [100]
Egypt     
- Alexandria (northern) 169 mothers N/A 88%  
  169 children < 1 13%  
   1.5 25% [101]
- Cairo (central) 52 < 6 33%  
  56 > 6 60% [102]
- Assiut (southern) urban N/A 87%  
  rural N/A 40% [103]
- poor urban area schoolchildren N/A 72.4% [104]
India 238 3-70 79% [13]
Mexico 11605 20-90 66% [61]
Nepal (rural) 1142 4-93 56.8% [69]
  407 2 mo-12 yr 48% [105]
Peru 104 0-17 50% [70]
Russia 213 20-75 88% [106]
- St. Petersburg 1995 307 2-19 44% [18, 106]
- St. Petersburg 2005 370 2-19 13% [18]
Saudi Arabia 557 5-10 40% [107]
   > 20 70%  
Taiwan 823 1-40+ 54% [78]
Developed Countries1:     
Australia (urban Melbourne) 273 19-47 23% [32]
Denmark 3589 30-60 25.9% [108]
Germany (western) 260 18-61 39.2% [60]
Israel (rural) 377 30-90 72% [109]
Japan 4361 19-69 30% [110]
Netherlands 254 (employees) 11-89 27.2% [111]
New Zealand 579 workers: 40-64 56%  
- Europeans 190   35.8%  
- Maori 195   57.4%  
- Pacific Islanders 194   73.2% [64]
Spain 332 > 18 43% [112]
- mountain 1782   54%  
- coastal 154   30%  
South Korea 161 20-75 75% [113]
Switzerland 176 natives 10-20 7.3% [81]
  20 immigrants   30%  
United Kingdom     
- England 267 (healthy) > 18 41% [114]
  467 (all males) 18-65 37.5% [115]
- Northern Ireland 4742 12-64 50.5% [116]
- South Wales 1796 45-59 70% [117]
United States     
- South Carolina 938 army recruits 17-26 26%  
  324 blacks   44%  
  47 Hispanics   38%  
  536 whites   14% [66]
- California 556 20-39 27% [67]
- Texas 246 blacks 15-80 70%  
  239 whites   34% [59]
  1. Examples of differences in H. pylori prevalence within and between countries, representing the developing and developed world.
  2. 1. The classification into developing or developed countries was retrieved from the United Nation Development Programme's Human Development Reports (URL: http://hdr.undp.org/en)
  3. 2. The number reported in the article was 179, which is likely a typographical error.
  4. N/A: Data not available or not applicable