TABLE 3.
Species | Enzyme (no. of isolates) | % Susceptible toa,b:
|
|||||
---|---|---|---|---|---|---|---|
AMC | PTZ | IMI | GEN | AMK | CIP | ||
E. colic | CTX-M-1 (35) | 77 | 100 | 100 | 89 | 97 | 54 |
CTX-M-15 (64) | 22 | 89 | 100 | 46 | 98 | 2 | |
CTX-M-32 (4) | 0 | 100 | 100 | 100 | 100 | 0 | |
K. pneumoniae | CTX-M-1 (3) | 67 | 100 | 100 | 100 | 100 | 100 |
CTX-M-15 (5) | 20 | 80 | 100 | 0 | 80 | 100 | |
CTX-M-32 (2) | 0 | 100 | 100 | 100 | 100 | 100 |
Based on disk diffusion testing.
AMC, amoxicillin-clavulanate; PTZ, piperacillin-tazobactam; IMI, imipenem; GEN, gentamicin; AMK, amikacin; CIP, ciprofloxacin.
Chi-squared test (CTX-M-1 and CTX-M-15): AMC, P < 0.001; PTZ, P < 0.05; GEN, P < 0.001; AMK, not significant; CIP, P < 0.001.