Susceptibility to ceftriaxone and ciprofloxacin of Neisseria gonorrhoeae over the study period 2014–2020
| Year | Total number of isolates (N=395) | Ceftriaxone (n=389) | Ciprofloxacin (n=364) | |||||||||
| No data | R | S | MIC50 (µg/mL) | MIC90 (µg/mL) | No data | R | RS | S | MIC50 (µg/mL) | MIC90 (µg/mL) | ||
| 2014 | 31 | 3 | 0 | 28 | 0.002 | 0.02 | 2 | 29 | 0 | 0 | 2 | 4 |
| 2015 | 67 | 0 | 3 | 64 | 0.002 | 0.006 | 21 | 46 | 0 | 0 | 2 | 3 |
| 2016 | 35 | 0 | 1 | 34 | 0.002 | 0.02 | 4 | 31 | 0 | 0 | 1 | 2 |
| 2017 | 56 | 2 | 4 | 50 | 0.002 | 0.016 | 1 | 50 | 2 | 3 | 1 | 3 |
| 2018 | 82 | 1 | 3 | 78 | 0.002 | 0.004 | 2 | 79 | 0 | 1 | 1.5 | 3 |
| 2019 | 82 | 0 | 3 | 79 | 0.002 | 0.006 | 1 | 81 | 0 | 0 | 2 | 4 |
| 2020 | 42 | 0 | 3 | 39 | 0.002 | 0.004 | 0 | 42 | 0 | 0 | 1.5 | 3 |
Breakpoints used: for ceftriaxone: S: ≤0.125 µg/mL, R: >0.125 µg/mL; for ciprofloxacin: S: ≤0.03 µg/mL, R: >0.06 µg/mL, RS: >0.03–0.06 µg/mL.
MIC50: lowest concentration of the antimicrobial at which 50% of the isolates are inhibited.
MIC90: lowest concentration of the antimicrobial at which 90% of the isolates are inhibited.
MIC, minimum inhibitory concentration; R, resistant; RS, reduced susceptible; S, susceptible.