From: Low level β-lactamase production in methicillin-resistant staphylococcus aureus strains with β-lactam antibiotics-induced vancomycin resistance
Phenotype
blaZ
Nitrocefin test
β-lactamase (μmol/min/mg protein)
Range
Average ± STD
BIVR
(n = 5)
-
<1 × 10-4
Non-BIVR (n = 10)
+
1.03 × 10-3 – 4.48
0.79 ± 1.84
2.76 × 10-4– 2.13 × 10-2
7.28 × 10-3 ± 1.25 × 10-2