|
In vitro susceptibility of 43 strains of Enterococcus sp. obtained from clinical and sub-clinical bovine mastitis cases from the West Littoral Region of Uruguay. |
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| MIC1(μg/ml) |
% Resistance |
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|
|
|
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| Antimicrobial Agent |
MIC502 |
MIC903 |
Range |
Breakpoint |
VETMIC |
Agar disk diffusion test |
|
|
||||||
| Penicillin |
0.5 |
4 |
0.12–> 8 |
≥ 16 |
7.0 |
7.0 |
| Ampicillin |
0.5 |
4 |
≤ 0.12–16 |
≥ 16 |
2.3 |
2.3 |
| Gentamicin |
≤ 1 |
4 |
≤ 1–4 |
≥ 16 |
0.0 |
0.0 |
| Erythromycin |
≤ 0.5 |
≤ 0.5 |
≤ 0.5–4 |
≥ 8 |
4.6 |
4.6 |
| Oxitetracycline |
2 |
2 |
≤ 0.25–2 |
≥ 16 |
0.0 |
2.0 56 |
| Trimethoprim/Sulfamethox. |
> 8 |
> 8 |
1–> 8 |
≥ 4 |
97.7 |
....4.... |
|
1 Minimum inhibitory concentration. 2 Lowest concentration inhibiting 50% of the isolated tested. 3 Lowest concentration inhibiting 90% of the isolated tested. 4 Test not performed. 5No significant differences between methods. 6 Tetracycline disk were used to perform agar disks diffusion. | ||||||
Gianneechini et al. Acta Veterinaria Scandinavica 2002 43:31 doi:10.1186/1751-0147-43-31 |
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