Table 1.
ESBL types and molecular epidemiology markers of 45 ESBL-producing Escherichia coli isolates obtained from children ≤4 years old
| Pediatric unita | No. of cases | PFGE clusterb | MLST typec | Phylogroup | ESBL |
|---|---|---|---|---|---|
| NICU | 21 | C1 | 23 | A | CTX-M-14a |
| NICU | 3 | C2 | 131 | B2 | SHV-12 |
| NICU | 1 | NR | ND | D | CTX-M-14a |
| NICU | 1 | NR | ND | D | CTX-M-14a |
| NICU | 1 | NR | ND* | B2 | CTX-M-14a |
| NICU | 1 | NR | ND | A | CTX-M-14a |
| NICU | 1 | NR | 131 | B2 | CTX-M-15 |
| NICU | 1 | NR | ND | B1 | CTX-M-15 |
| EMER | 2 | C3 | 57 | D | SHV-12 |
| EMER | 1 | C2 | 131 | B2 | SHV-12 |
| EMER | 1 | NR | ND* | B2 | CTX-M-14a |
| EMER | 1 | NR | ND* | B2 | CTX-M-14a |
| EMER | 1 | NR | ND* | B2 | CTX-M-14b |
| NEPH | 1 | NR | ND* | B2 | CTX-M-14b |
| NEPH | 1 | NR | ND | A | CTX-M-14b |
| EMER | 1 | NR | ND | B1 | CTX-M-14b |
| EMER | 1 | NR | ND | B1 | CTX-M-14a |
| EMER | 1 | NR | 131 | B2 | CTX-M-15 |
| EMER | 1 | NR | 131 | B2 | CTX-M-15 |
| EMER | 1 | NR | ND* | B2 | CTX-M-15 |
| NEPH | 1 | NR | ND | A | CTX-M-15 |
| EMER | 1 | NR | ND | A | SHV-2 |
a
NICU, neonatal intensive care unit; EMER, Emergency Unit; NEPH, Nephrology Unit.
b
NR, nonrelated.
c
ND, not determined. *, phylogroup B2 isolate negative for serotype O25b.