Table 3.

Prevalence of cagA related to the main allelic combinations of vacA

Gastroduodenal condition	CagA+			CagA-
	s1m1	s1m2	s2m2	s1m1	s1m2	s2m1 s2m2
Gastritis*	8(53.3%)	5(33.3%)	2(13.4%)	6(50%)	2(16.7%)	3(25%) 1(8.3%)
NUD**	0(0%)	0(0%)	0(0%)	1(20%)	2(40%)	1(20%) 1(20%)

^*Strains isolated from patients with gastritis (n = 27) ^**Strains isolated from patients with non-ulcer dyspepsia (n = 5).