TABLE 3.

Chlorhexidine and polyhexanide MIC values of 54 MRSA clinical strains isolated before and after polyhexanide patient decolonization^a

Strain no. (day 0)b	MIC (μg/ml) for:		Strain no. (day 28)c	MIC (μg/ml) for:
	Chlorhexidine	Polyhexanide		Chlorhexidine	Polyhexanide
1	4	0.5	1	4	0.5
2	<0.5	0.5	2	1/0.5	1
3	4	0.5	3	4	1
4	<0.5	0.5	4	<0.5	0.5
5	4	0.25	5	2/4	0.5
6	4	0.5	6	2	0.5
7	4	0.5	7	4	0.5
8	1	0.5	8	1	0.5
9	<0.5	0.5	9	<0.5	0.5
10	4	0.5	10	4	0.5
11	4	0.5	11	1	0.5
12	4	0.25	12	4	0.5
13	4	1	13	<0.5	0.5
14	4	0.5	14	2	1
15	1	1	15	4	0.5
16	2	0.5–1	16	4	0.5
17	<0.5	1	17	<0.5	0.5
18	4	0.5	18	4	0.25
19	4	0.5	19	4	0.5
20	2	0.5	20	2	0.5
21	2	0.25	21	2	0.25
22	<0.5	0.5	22	1	1
23	2	1	23	1	1
24	4	0.5	24	4	0.5
25	4	0.5	25	1	0.5
26	4	0.5	26	4	0.5
27	2	1	27	4	0.25

^aBold type is used for pairs of strains showing the most important changes.

^bMRSA clinical strains isolated prior to polyhexanide decolonization (day 0) or after 28 days of polyhexanide treatment (day 28).

^cMRSA day 28 bacteria were clonally related to day 0 bacteria, isolated from the same patient.