Table 3.

vacA and cagA genotypes found in Portuguese and Dutch H. pylori isolates determined by PCR-LiPA

TypeNo. of isolatesa
PortugalThe Netherlands
NUD (15)CA (20)DU (20)PU (25)bNUD (23)
s1a/m1111148
s1a/m232
s1b/m1614221
s1b/m2131
s2/m24349
Multiplec 351113
cagA negative52249
cagA positive1018182114
  • a Abbreviations: CA, gastric carcinoma; DU, duodenal ulcers; PU, peptic ulcers. Numbers in parentheses represent number of patients.

  • b One isolate did not yield a PCR fragment from the s region, but it contained vacA m1 and wascagA positive.

  • c More than one vacA s or m type was detected by LiPA.