Table 2. Most common patterns of antimicrobial resistance among multidrug-resistant S. zooepidemicus and R. equi isolated from equine specimens submitted to a veterinary diagnostic laboratory in Kentucky, USA (2012–2017).
| Pattern | Number of isolates | Percent |
|---|---|---|
| Streptococcus zooepidemicus | ||
| CHL-ENR-TET | 28 | 27.7% |
| CHL-ENR-TET-TMS | 19 | 18.8% |
| CHL-ENR-TET-DOX | 10 | 9.9% |
| CHL-ENR-TET-DOX-TMS | 6 | 5.9% |
| ENR-TET-TMS | 6 | 5.9% |
| ENR-TET-DOX-TMS | 5 | 5.0% |
| Rhodococcus equi | ||
| CLR-CHL-ENR-ERY-RIF-TET-TMS | 10 | 19.6% |
| CLR-CHL-ENR-ERY-RIF | 9 | 17.7% |
| CHL-ENR-TMS | 5 | 9.8% |
| CLR-ENR-ERY-RIF-TET-TMS | 4 | 7.8% |
| CHL-ENR-RIF-TET-TMS | 3 | 5.9% |
| CHL-ENR-TET-TMS | 2 | 3.9% |
Notes.
- CHL
- chloramphenicol
- CLR
- clarithromycin
- DOX
- doxycycline
- ENR
- enrofloxacin
- ERY
- erythromycin
- RIF
- rifampin
- TET
- tetracycline
- TMS
- trimethoprim/sulfamethoxazole