TABLE 4.
Association of metronidazole resistance and ntrTv genotypes with inferred populations
| Population | Characteristic (no. [%]) |
|||||||
|---|---|---|---|---|---|---|---|---|
| Total | ntr4Tv C213G (Y71STOP) | ntr6Tv A238T (K80STOP) | Metronidazole susceptible | Metronidazole resistanta |
||||
| Total | Low | Moderate | High | |||||
| 1 | 43 (100) | 2 (4.7) | 0 (0) | 29 (67) | 14 (33) | 0 (0) | 5 (12) | 9 (21) |
| 2 | 50 (100) | 44 (88) | 19 (38) | 18 (36) | 32 (64) | 4 (8) | 11 (22) | 17 (34) |
| 1/2 | 7 (100) | 4 (57) | 2 (29) | 3 (43) | 4 (57) | 0 (0) | 3 (43) | 1 (14) |
a
Resistance is defined as low (MLC ≤ 100 μg/ml), moderate (MLC > 200 μg/ml), or high (MLC ≥ 400 μg/ml); isolates with MLC values between 100 and 400 μg/ml were categorized as moderate.