Table 7.

β-Lactamase types of 520 P. mirabilisstrains resistant to amoxicillin

Phenotype (n)Enzyme(s)% of strains with enzyme
Penicillinase (407)TEM-146
TEM-218
TEM-1 + TEM-211.3
CARB-21.5
SHV-11.5
Total78.3
IRT/OXA (39)IRT-132.7
IRT-13 + TEM-13.4
IRT-160.4
IRT-16 + TEM-10.2
IRT-20.2
OXA0.6
Total7.5
ESBL (74)TEM-313.6
TEM-3 + TEM-10.2
TEM-3 + TEM-20.2
TEM-660.2
Total14.2