Skip to main content
. 2009 Jan 14;15(2):204–210. doi: 10.3748/wjg.15.204

Table 4.

Worldwide distribution of main H pylori virulence factors

World Area vacA alleles prevalence (%)
 References cagAprevalence (%) cagA+ babA2prevalence (%) babA2+
s1 s2 m1 m2
Europe 48-89 11-51 37 63 [14,23,26,27] 66-73[14,23,26,27] 34-72[13,14,34]
America 57-68 16-48 37-44 29-63 [19,20,24] 57-75[7,19,24] 46-69[24,32]
East Asia 100 0 41-94 5-55 [12,25,28] 90-100[12,25,28,35] 80-100[12,21,35]