Table 3.

Relationship between cagA andvacA subtypes in 45 H. pylori strains

cagA genotypeNo. of strains with the following vacA genotype:
s1as1bs1cMultiplesaTotal
m1m2m1m2m1m2
cagA1b 1112210219
cagA2c 210069119
cagA3 tocagA5 12310007
Total1445379345
  • a Strains containing multiplevacA subtypes (PE9012, PO16, and TH8839).

  • b The presence of cagA1 is associated with vacA type s1a or s1b (P < 0.001) and type m1 (P = 0.035).

  • c The presence of cagA2 is associated with vacA type s1c (P < 0.001) and type m2 (P = 0.035).