Table 4.
Comparison of the antimicrobial susceptibility results obtained for 105 clinical isolates by Flexicult Vet B and by the broth microdilution method (reference standard)
| Bacterial species | Reference standard | Flexicult Vet B | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| AMP (R > 8 µg/ml) | AMC (R > 8/4b µg/ml) | OXAa (R > 0.25 µg/ml) | ENR (R > 2 µg/ml) | SXT (R > 2/38c µg/ml) | |||||||
| R | S | R | S | R | S | R | S | R | S | ||
| Escherichia coli (n = 40) | R | 22 | – | 5 | – | 13 | – | 18 | – | ||
| S | – | 18 | 10 | 25 | – | 27 | – | 22 | |||
| Staphylococcus pseudintermedius (n = 20) | R | 3 | 3 | 1 | 2 | 10 | – | 5 | – | 8 | – |
| S | – | 14 | – | 17 | – | 10 | – | 15 | – | 12 | |
| Proteus mirabilis (n = 12) | R | 4 | – | 1 | 2 | 1 | – | 2 | – | ||
| S | – | 8 | 1 | 8 | 1 | 10 | – | 10 | |||
| Enterococcus spp. (n = 12) | R | 2 | 2 | 2 | 2 | 8 | – | 2 | 1 | ||
| S | – | 8 | – | 8 | – | 4 | – | 9 | |||
| Streptococcus canis (n = 10) | R | – | – | – | – | 1 | – | – | – | ||
| S | – | 10 | – | 10 | – | 9 | – | 10 | |||
| Enterobacter spp. (n = 8) | R | 3 | – | 4 | – | – | – | – | – | ||
| S | 1 | 4 | 1 | 3 | – | 8 | – | 8 | |||
| Staphylococcus | R | 1 | – | 1 | – | 2 | – | 2 | – | 1 | – |
| aureus (n = 5) | S | – | 4 | – | 4 | 1 | 2 | – | 3 | – | 4 |
| Klebsiella spp. (n = 3) | R | 2 | 1 | – | – | – | – | – | – | ||
| S | – | – | – | 3 | – | 3 | – | 3 | |||
| Total (n = 105) | R | 37 | 6 | 14 | 6 | 12 | – | 30 | – | 31 | 1 |
| S | 1 | 66 | 12 | 78 | 1 | 12 | 1 | 79 | – | 78 | |
AMP ampicillin, AMC amoxicillin-clavulanate, OXA oxacillin, ENR enrofloxacin, SXT trimethoprim-sulfamethoxazole
aOxacillin results were only interpreted for S. pseudintermedius and S. aureus, since this drug is a surrogate drug for detection of methicillin resistance in staphylococci
bThe values 8 and 4 represent amoxicillin and clavulanate, respectively
cThe values 2 and 38 represent trimethoprim and sulfamethoxazole, respectively