Rate of resistance of Helicobacter pylori in Europe (1893 adults, 311 children)
| Antibiotic | N (%) resistant adults | N (%) resistant children* |
| Clarithromycin | 332 (17.5) | 99 (31.8) |
| Levofloxacin | 267 (14.1) | 8 (2.5) |
| Amoxicillin | 14 (0.7) | 1 (0.3) |
| Tetracycline | 17 (0.9) | 0 (0) |
| Rifabutin | 22 (1.1) | 1 (0.3) |
| Metronidazole | 661 (34.9) | 80 (25.7) |
↵* Children from Austria, France, Germany, Greece, Italy, Poland, Portugal and Spain only were included.