TABLE 1.
β-Lactamase class(es) detected | Nonconfirmed ESBL test
|
Confirmed ESBL test
|
||||||
---|---|---|---|---|---|---|---|---|
E. coli
|
K. pneumoniae
|
E. coli
|
K. pneumoniae
|
|||||
n | % | n | % | n | % | n | % | |
AmpC only | 3 | 5.8 | 9 | 17.6 | ||||
TEM only | 11 | 21.2 | 7 | 10.4 | ||||
SHV only | 1 | 1.9 | 5 | 9.8 | 4 | 6.0 | 17 | 25.0 |
CTX-M only | 1 | 1.9 | 9 | 13.4 | 6 | 8.8 | ||
TEM+SHV | 3 | 5.8 | 13 | 19.4 | 16 | 23.5 | ||
TEM+CTX-M | 24 | 35.8 | ||||||
SHV+CTX-M | 9 | 13.2 | ||||||
AmpC+TEM | 26 | 50.0 | 1 | 2.0 | ||||
AmpC+SHV | 1 | 1.9 | 19 | 37.3 | 1 | 1.5 | 6 | 8.8 |
TEM+SHV+CTX | 3 | 5.9 | 1 | 1.5 | 13.2 | |||
AmpC+TEM+SHV | 2 | 3.8 | 9 | 17.6 | 3 | 4.5 | ||
AmpC+TEM+CTX | 2 | 3.0 | 1 | 1.5 | ||||
AmpC+SHV+CTX-M | 1 | 1.5 | 1 | 1.5 | ||||
AmpC+TEM+SHV+CTX-M | ||||||||
PCR negative | 4 | 7.7 | 5 | 9.8 | 2 | 3.0 | 3 | 4.4 |
Totals | 52 | 51 | 68 | 67 | ||||
Any AmpC | 32 | 61.5 | 38 | 74.5 | 7 | 10.4 | 8 | 11.8 |
Any TEM | 42 | 80.8 | 13 | 25.5 | 50 | 74.6 | 26 | 38.2 |
Any SHV | 7 | 13.5 | 17 | 33.3 | 23 | 34.3 | 58 | 85.3 |
Any CTX-M | 1 | 1.9 | 3 | 5.9 | 36 | 55.2 | 26 | 38.2 |
n, Number of isolates.