Table 1.
Phenotypic and genotypic characteristics of the K. pneumoniae clinical isolates
| Phenotypic | Antibiogram | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Group | subgroup | No. of isolates (n = 270) | CAZ | CTX | FEP | FOX | ETP | IPM | CIP | CHL | GEN | AMK | ESBLs | Pulsotypes |
| I | a | 155 | R | R | R | S | S | S | R | R | S/I/R | S/I/R | CTX-M-15 | A |
| b | 71 | R | R | I | S | S | S | R | R | S/I/R | S/I/R | CTX-M-15 | A | |
| c | 18 | I | R | S | S | S | S | R | S/I/R | S/R | S/I/R | CTX-M-15 | B | |
| d | 7 | S | R | S | S/R | S | S | I/R | I/R | R/S | S | CTX-M-15 | C | |
| e | 4 | R | R | S | S | S | S | R | R | R/S | R/S | CTX-M-15 | A, B, K, L | |
| II | — | 5 | R | S | S | S | S | S | S | I/S | S | S | SHV-12 | D |
| III | — | 10 | S | S | S | S | S | S | S | I/R/S | S | S | none | miscellaneous |
CAZ, ceftazidime; CTX, cefotaxime; FEP, cefepime; FOX, cefoxitin; ETP, ertapenem; IPM, imipenem; CIP, ciprofloxacin; CHL, chloramphenicol; GEN, gentamicin; AMK, amikacin.
Susceptibility results were interpreted according to the CLSI criteria: R, resistant; I, intermediate; S, susceptible.