Table 5.
Occurrence of antimicrobial resistance among Streptococcus spp. from cases of bovine mastitis in different countries in Europe.
| Antimicrobial agent | Year | Bacterial species, country and prevalence of resistance | ||||||||
| S. uberis | S. dysgalactiae | |||||||||
| E | F | I | NL | S | E | F | NL | S | ||
| Chloramphenicol | 2002 | - | - | - | - | 0.0 | - | - | - | 0.0 |
| 2003 | - | - | 7.0 | - | - | - | - | - | - | |
| 2004 | - | - | - | - | - | - | - | - | - | |
| Erythromycin | 2002 | 8.0 | 22.2 | - | 21.4 | 0.0 | 3.0 | 14.8 | 14.0 | 0.0 |
| 2003 | 8.0 | 17.0 | 22.0 | 19.3 | - | 5.0 | 17.0 | 12.8 | - | |
| 2004 | 8.0 | - | - | 0.0 | - | 2.0 | - | 6.7 | - | |
| Gentamicin | 2002 | - | 52.7 | - | - | - | - | 11.7 | - | - |
| 2003 | - | - | 52.0 | - | - | - | - | - | - | |
| 2004 | - | - | - | - | - | - | - | - | - | |
| Penicillin | 2002 | 0.3 | 0.4 | - | 3.9 | 0.0 | 0.7 | 3.4 | 0.0 | 0.0 |
| 2003 | 0.0 | 1.0 | 0.0 | 0.0 | - | 0.0 | 0.0 | 0.0 | - | |
| 2004 | 0.0 | - | - | 0.0 | - | 0.0 | - | 0.0 | - | |
| Tetracycline | 2002 | 15.0 | 20.9 | - | 33.0 | 2.0 | 46.0 | 41.6 | 76.6 | 6.0 |
| 2003 | 11.0 | 17.0 | 44.0 | 41.0 | - | 47.0 | 53.0 | 76.6 | - | |
| 2004 | 15.0 | - | - | 35.4 | - | 39.0 | - | 67.8 | - | |
| TMP + Sulphonamides | 2002 | - | 0.8 | - | 8.7 | 0.0 | - | 6.6 | 0.0 | 0.0 |
| 2003 | - | 0.0 | - | 1.2 | - | - | 4.0 | 0.0 | - | |
| 2004 | - | - | - | 0.0 | - | - | - | 0.0 | - | |
E – England, F – France; I – Italy; NL – The Netherlands; S – Sweden.