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Table 1 The frequency of cagA and vacA alleles in Helicobacter pylori of ruminants and human samples

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

Positive samples cagA s1a s1b s1c s2 m1a m1b m2
Cow 4 5 1 0 0 2 0 4
6 (3%) (66.66%) (83.33%) (16.66%)    (33.33%)   (66.66%)
Sheep 24 16 11 0 5 14 0 18
32 (16%) (75%) (50%) (34.37%)   (15.62%) (43.75%)   (56.25%)
Human 151 79 21 35 29 52 15 97
164 (82%) (92.08%) (48.17%) (12.80%) (21.34%) (17.68%) (31.70%) (9.14%) (59.14%)