From: Frequency of vacA, cagA and babA2 virulence markers in Helicobacter pylori strains isolated from Mexican patients with chronic gastritis
Genotype
Number (%)
vacAs1
cagA
babA2
+
14 (14.4)
-
7 (7.2)
42 (43.3)
34 (35.0)
97 (100)