Table 3.

Genes encoding extended-spectrum β-lactamases (ESBLs) and carbapenemases in Gram-negative bacilli from Tripoli, Libya

		ESBLs genesa		Carbapenemase genesa,b
No.	Organism	blaCTX-M	bla GES	bla NDM	bla VIM	bla OXA-48	bla OXA-23-like	bla OXA-51-like
1	Acinetobacter baumannii	N	N	N	N	N	P	P
2	Acinetobacter baumannii	N	N	N	N	N	P	P
3	Pseudomonas aeruginosa	N	P	N	N	N	ND	ND
4	Pseudomonas putida	N	N	N	P	N	ND	ND
5	Escherichia coli	N	N	N	N	N	ND	ND
6	Klebsiella pneumoniae	P	N	P	N	N	ND	ND
7	Klebsiella pneumoniae	N	N	N	N	P	ND	ND
8	Enterobacter gergoviae	P	N	N	N	P	ND	ND

^aESBLs genes bla_VEB, bla_PER and bla_BES and carbapenemase gene bla_KPC were not detected in all eight isolates tested.

^bCarbapenemases genes bla_{OXA-24/40-like}, bla_OXA-58-like and bla_OXA-143 were not detected in both A. baumanii isolates examined.

N=negative, P=positive, ND=not done.