Table 2: Prevalence of H. pylori virulence factors among isolates from patients with gastric carcinoma, gastric ulcer, duodenal ulcer, and chronic gastritis.

DiagnosisGCGUDUCGTotal
Number of isolates2032311699

CagA 20 (100.0%)31 (96.8%)31 (100.0%)16 (100.0%)98 (99.0%)
CagE 19 (95.0%)31 (96.9%)30 (96.8%)15 (93.8%)95 (96.0%)
CagM 19 (95.0%)31 (96.8%)31 (100.0%)15 (93.8%)96 (97.0%)
CagT 19 (95.0%)31 (96.8%)31 (100.0%)16 (100.0%)97 (98.0%)
orf1018 (90.0%)32 (100.0%)31 (100.0%)16 (100.0%)97 (98.0%)
orf1318 (90.0%)32 (100.0%)31 (100.0%)16 (100.0%)97 (98.0%)

GC: gastric carcinoma; GU: gastric ulcer; DU: duodenal ulcer; CG: chronic gastritis.