Vacuolating activity and expression of VacA and CagA protein in clinical isolates
| Diagnosis | Vacuolating activity (%) | VacA (%) | CagA (%) |
| Gastric ulcer (n = 16) | 13 (81) | 14 (88) | 15 (94) |
| Duodenal ulcer (n = 17) | 15 (88) | 15 (88) | 15 (88) |
| Non-ulcer dyspepsia (n = 25) | 20 (80) | 21 (84) | 21 (84) |
| Gastric cancer (n = 10) | 9 (90) | 9 (90) | 10 (100) |
| Total (n = 68) | 57 (84) | 59 (87) | 61 (90) |