Antimicrobial breakpoints (susceptible/resistant [mg/L]) a | No. (%) | MIC (mg/L) | ||||
---|---|---|---|---|---|---|
Susceptible | Intermediate | Resistant | Range | MIC 50 | MIC 90 | |
Penicillin G (S ≤ 0.06/R ≥ 2) | 0 | 108 (32.3) | 226 (67.7) | 0.125 to >8 | 2 | >8 |
Tetracycline (S ≤ 0.25/R ≥ 2) | 2 (0.6) | 5 (1.5) | 327 (97.9) | 0.25 to >16 | 8 | >16 |
Ciprofloxacin (S ≤ 0.06/R ≥ 1) | 0 | 4 (1.2) | 330 (98.8) | ≤0.25 to >8 | >8 | >8 |
Spectinomycin (S ≤ 32/R ≥ 128) | 334 (100) | 0 | 0 | ≤4 to 32 | 16 | 32 |
Ceftriaxone (S ≤ 0.25) | 334 (100) | - | - | 0.004 to 0.25 | 0.03 | 0.06 |