Table 2. Virulence genes [n (%)] of H. pylori in the Dominican Republic.

	Total	Gastritis	Peptic ulcer	Gastric cancer
N	64	47	16	1
cagA (+)	48 (75.0 %)	36 (76.6)	12 (75.0)	0 (0.0)
cagA (–)	16 (25.0)	11 (23.4)	4 (25.0)	1 (100.0)
vacA s1	48 (75.0)	36 (76.6)	12 (75.0)	0 (0.0)
vacA s2	16 (25.0)	11 (23.4)	4 (25.0)	1 (100.0)
vacA m1	46 (71.9)	34 (72.3)	12 (75.0)	0 (0.0)
vacA m2	18 (28.1)	13 (27.7)	4 (25.0)	1 (100.0)
vacA s1m1	44 (68.8)	33 (70.2)	11 (68.8)	0 (0.0)
vacA s1m2	4 (6.3)	3 (6.4)	1 (6.3)	0 (0.0)
vacA s2m1	2 (3.1)	1 (2.1)	1 (6.3)	0 (0.0)
vacA s2m2	14 (21.9)	10 (21.3)	3 (18.8)	1 (100.0)
cagA (+) vacA s1m1	43 (67.2)	32 (68.1)	11 (68.8)	0 (0.0)
cagA (+) vacA s1m2	3 (4.7)	2 (4.3)	1 (6.3)	0 (0.0)
cagA (+) vacA s2m1	1 (1.6)	1 (2.1)	0 (0.0)	0 (0.0)
cagA (+) vacA s2m2	1 (1.6)	1 (2.1)	0 (0.0)	0 (0.0)
cagA (–) vacA s1m1	1 (1.6)	1 (2.1)	0 (0.0)	0 (0.0)
cagA (–) vacA s1m2	1 (1.6)	1 (2.1)	0 (0.0)	0 (0.0)
cagA (–) vacA s2m1	1 (1.6)	0 (0.0)	1 (6.3)	0 (0.0)
cagA (–) vacA s2m2	13 (20.3)	9 (19.1)	3 (18.8)	1 (100.0)