TABLE 1.

H. pylori vacA genotypes in gastric biopsy samples and clinical isolates

vacA genotypeNo. (%) of samples or isolates
Gastric biopsyClinical
s1/m1118 (48)31 (60)
s1/m268 (28)14 (27)
s2/m223 (9)4 (7)
s2/m14 (2)0
s1/m1m2a11 (4)2 (4)
s2/m1m2a2 (0.7)0
s1s2/m2a4 (2)1 (2)
s1s2/m1m2a1 (0.3)0
Incomplete (vacA s or m)b15 (6)0
Total vacA positive246 (100)52 (100)
  • a Multiple vacA genotypes.

  • b For vacA s and m regions, n = 7 and n = 8, respectively.