Table 2. Distribution of different bla gene classes and genes among the CR-AB isolates.

bla class	bla gene	A. baumannii isolates N (%)
Class A	blaKPC	22 (10.7%)
	blaGES	0 (0.0%)
Class-B	blaVIM	1 (0.5%)
	blaIMP	0 (0.0%)
	blaGIM	0 (0.0%)
	blaSPM	13 (6.3%)
	blaSIM-1	1 (0.5%)
	blaNDM-1	24 (11.7%)
Class D	blaOXA-51	206 (100%)
	blaOXA-23	160 (77.7%)
	blaOXA-24/40	0 (0.0%)
	blaOXA-58	4 (1.9%)
Other beta-lactamases	blaPER	2 (1.0%)
	blaVEB	0 (0.0%)
ISAb1 upstream of blaOXA-23		16 (7.8%)