Table 2.

Distribution of vacA alleles in patient groups

vacAalleleNo. (%) of isolates
Study group PUD (n = 105)Control group NUD (n = 52)
s1a95 (90)30 (58)
s1b6 (6)6 (11)
s24 (4)16 (31)
m130 (29)19 (36)
mx (m1a)23 (22)6 (12)
m252 (49)27 (52)