Colistin Resistance of Pseudomonas aeruginosa Isolated from Snakes in Taiwan

Table 2

Distribution of MICs and antimicrobial sensitivity test of gentamicin, amikacin, cefotaxime, piperacillin/tazobactam, colistin, meropenem, and aztreonam for P. aeruginosa.

Agent	Number of isolates with indicated MIC values (mg/L)												Percentage of indicated susceptibility
	0.125	0.25	0.5	1	2	4	8	16	32	64	128	≥256	(%)	(%)	(%)
Gentamicin	0	0	0	0	5	34	11	2	0	0	1	5	39 (67%)	11 (19%)	8 (14%)
Amikacin	0	0	0	0	0	28	19	6	0	0	0	5	53 (91%)	0	5 (9%)
Cefotaxime	0	0	0	0	0	2	4	18	17	9	6	2	6 (10%)	18 (31%)	34 (59%)
Pip + taz	0	0	0	0	0	14	28	9	5	2	0	0	51 (88%)	7 (12%)	0
Colistin	0	0	0	0	26	25	2	0	2	0	0	3	26 (45%)	25 (43%)	7 (12%)
Meropenem	6	18	8	17	8	1	0	0	0	0	0	0	57 (98%)	1 (2%)	0
Aztreonam	0	0	0	0	4	19	26	6	2	0	0	1	49 (85%)	6 (10%)	3 (5%)

Pip + taz: piperacillin/tazobactam; : susceptible; : intermediate; : resistant.