Table 2.
Percentage of resistant Staphylococcus aureus per year.
| Antibiotic Category | Year | 2016 | 2017 | 2018 | 2019 | |
|---|---|---|---|---|---|---|
| (Number of Strains) | (139) | (118) | (118) | (107) | ||
| Penicillins | PEN | 43.9 | 47.5 | 47.5 | 56.1 | |
| AMX | 43.2 | 46.6 | 47.5 | 55.1 | ||
| OXA ** (p = 0.045) | 15.8 | 22.9 | 22.0 | 27.1 | ||
| AMC ** (p = 0.021) | 17.3 | 22.9 | 22.6 | 28.0 | ||
| Cephalosporins | 2nd | FOX | 17.3 | 22.9 | 22.6 | 28.0 |
| 3rd | CEF ** (p = 0.045) | 17.3 | 22.9 | 22.6 | 28.0 | |
| 4th | CEQ ** (p = 0.031) | 17.3 | 22.9 | 22.6 | 28.0 | |
| Aminoglycosides | STR | 20.9 | 11.0 * | 11.0 | 17.8 | |
| (p = 0.033) | ||||||
| KAN ** (p = 0.003) | 23.0 | 31.4 | 32.2 | 41.1 | ||
| GEN ** (p = 0.001) | 21.6 | 30.5 | 32.2 | 41.1 | ||
| Tetracycline | TET ** (p = 0.01) | 27.3 | 35.6 | 35.6 | 43.9 | |
| Macrolides | ERY | 5.8 | 5.1 | 4.2 | 8.4 | |
| Rifampicin | RIF ** (p < 0.001) | 2.9 | 11.0 * | 15.3 | 16.8 | |
| (p = 0.009) | ||||||
| Sulphonamides | SXT ** (p = 0.008) | 6.5 | 3.4 | 12.7 * | 14.0 | |
| (p = 0.008) | ||||||
| Fluoroquinolones | ENO ** (p = 0.002) | 1.4 | 2.5 | 5.9 | 9.3 | |
| MAR ** (p = 0.002) | 1.4 | 1.7 | 5.9 | 9.3 | ||
PEN—penicillin; AMX—amoxicillin; AMC—amoxicillin-clavulanic acid; CEF—ceftiofur; CEQ—cefquinome; STR—streptomycin; KAN—kanamycin; GEN—gentamicin; TET—tetracycline; ERY—erythromycin; RIF—rifampicin; SXT—trimethoprim-sulfamethoxazole; ENO—enrofloxacin; MAR—marbofloxacine; OXA—oxacillin, marker of methicillin resistance; FOX—cefoxitin, marker of methicillin resistance; * Chi-square test compared to the previous year, p < 0.05; ** Cochran–Armitage trend test, p < 0.05. The percentage of resistance is categorised by cell colours: green for resistance ≤10%, yellow for resistance between 10% and 30%, pink for resistance between 30% and 50%, and red for resistance >50%.