TABLE 3.

PCR and IEF profiles of isolates that do not demonstrate a CA effect but show resistance to multiple extended-spectrum cephalosporins

No. of isolates (n = 51)PCR resultIEF profile(s); p1 result(s) (no. of isolates)
36blaTEM positive only5.3-5.5; 8.3-8.6 (31)
5.4, 5.7, 7.0 (1)
5.5, 5.7, 7.1 (1)
5.3-5.4 (3)
10Negative for blaTEM, blaSHV, and blaOXA8.3, 8.5 (1)
8.5 (4)
8.3 (3)
5.4, 8.4 (1)
5.6, 6.5, 6.9 (1)
5blaOXA positive only7.1-7.2; 8.4 (5)