Table 1. Characteristics of included isolates (n=36).

Organism	Colistin resistance by BMD	AmpC β-lactamase	ESBL	Carbapenemase
E. coli (16, 44.4%)	3*	3	3	6
Enterobacter cloacae complex (3, 8.3%)	2	3	0	2
K. pneumoniae (12, 33.3%)	9	1	6	2
Citrobacter freundii complex (2, 5.6%)	0	2	0	2
Acinetobacter baumannii complex (1, 2.8%)	1	0	0	0
P. aeruginosa (1, 2.8%)	0	0	0	0
K. aerogenes (1, 2.8%)	1	1	0	0

*1One isolate was confirmed as mcr-1.