Table 2. Resistance of HARP isolates by regiona.
| Region | No. isolates | Amoxicillin No. (%) | Tetracycline No. (%) | Clarithromycin No. (%) | Metronidazole No. (%) | Resistant to 1 agent No. (%) | Resistant to >1 agent No. (%) | Resistant to >1 agent No. (%) |
|---|---|---|---|---|---|---|---|---|
| Northeast | 156 | 2 (1) | 0 | 23 (15) | 47 (30) | 54 (35) | 9 (6) | 63 (40) |
| South | 92 | 1 (1) | 0 | 13 (14) | 13 (14) | 19 (21) | 4 (4) | 23 (25) |
| West | 24 | 0 | 0 | 1 (4) | 4 (17) | 3 (13) | 1 (4) | 4 (17) |
| Midwest |
75 |
0 |
0 |
8 (11) |
23 (31) |
25 (33) |
3 (4) |
28 (37) |
| Total | 347 | 3 | 0 | 45 | 87 | 101 | 17 | 118 |
aN = 347; HARP, Helicobacter pylori Antimicrobial Resistance Monitoring Project.