| Pathogenicity factors (genes) | Frequency | |
| n | % | |
| cagA allele (N = 77) |
|
|
| cagAP1, P2, P3 | 71 | 92.2 |
| cagAP2, P3 | 3 | 3.9 |
| cagAP3 | 3 | 3.9 |
| vacA alleles s and m (N = 72) |
|
|
| vacAs1m1 | 59 | 81.9 |
| vacAs2m1 | 1 | 1.4 |
| vacAs2m2 | 1 | 1.4 |
| vacAs1 | 9 | 12.5 |
| vacAs2 | 1 | 1.4 |
| vacAm1 | 1 | 1.4 |
| vacAallele i1 (N = 76) | 76 | 100 |
| vacAallele s1a (N = 71) | 00 | 00 |
| vacAallele s1b (N = 71) | 59 | 83 |
| vacAallele s1c (N = 51) | 17 | 33.3 |