Table 2.

MICs of CAZ and ATM in 76 S. maltophilia isolates: alone or in combination with 4 μg/mL AVI

antibiotics	MIC (μg/mL)
	0.016	0.03	0.06	0.12	0.25	0.5	1	2	4	8	16	32	64	128	256	512	1024
ATM	0	0	0	0	0	0	1	1	1	5	1	2	59	2	0	3	1
ATM + AVI	0	0	1	2	0	4	18	35	5	4	2	3	2	0	0	0	0
CAZ	0	1	0	0	0	1	3	8	12	18	9	2	22	0	0	0	0
CAZ + AVI	1	0	0	1	2	3	8	28	9	7	5	2	10	0	0	0	0

MIC Minimum inhibitory concentrations; CAZ ceftazidime; ATM aztreonam; AVI avibactam