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Table 2 The frequency of vacA genotypes in Helicobacter pylori of ruminants and human samples

From: Study of Helicobacter pylori genotype status in cows, sheep, goats and human beings

Positive samples s1a/m1a s1a/m1b s1a/m2 s1b/m1a s1b/m1b s1b/m2 s1c/m1a s1c/m1b s1c/m2 s2/m1a s2/m1b s2/m2
Cow 2 0 3 0 0 1 0 0 0 0 0 0
6 (3%) (33.33%)   (50%)    (16.66%)       
Sheep 6 0 10 5 0 6 0 0 0 1 0 4
32 (16%) (18.75%)   (31.25%) (15.62%)   (18.75%)     (3.12%)   (12.5%)
Human 27 8 45 7 5 10 12 4 18 6 0 22
164 (82%) (16.46%) (4.87%) (27.43%) (4.26%) (3.04%) (6.09%) (7.31%) (2.43%) (10.97%) (3.65%)   (13.41%)