Table 2.

Prevalence of cagA related to the main allelic combinations of vacA.

Gastroduodenal condition	cagA+			cagA-
	s1m1	s1m2	s2m2	s1m1	s1m2	s2m2
Ulcers*	13 (52%)	0	2 (8%)	0	1 (4%)	8 (32%)
NUD**	10 (26%)	3 (8%)	7 (18%)	4 (11%)	2 (5%)	11 (29%)

^*Strains isolated from ulcer patients (N = 25) ^**Strains isolated from NUD patients (N = 38)