Colistin Resistance in Escherichia coli and Salmonella enterica Strains Isolated from Swine in Brazil

Table 2

Distribution of inhibition zone diameters swine E. coli and S. enterica strains through disk diffusion test against colistin.

Disk difusion	Number of strains with colistin inhibition zone values (mm)
	8	9	10	11	12	13	14	15	16	17	18	19
E. coli	[0	0	4	0]	34	3	74	2	8	0	1	0
S. enterica	[0	0	5	0]	17	12	69	4	12	0	5	0

The values inside [] represent resistant strains.