Table 2:

S. aureus Reservoir Exposure, Transmission and SSI Development by Surgeon and Treatment

Surgeon	Treatment group	No. Cases	Isolates Transmission N (% group total)	Any Transmission N (% group total)	Between Transmission N (% group total)	Surgical Site Infection N (% group total)
7	1	41	23 (46)	10 (43.5)	2 (66.7)	1 (100)
8	1	27	15 (30)	7 (30.4)	0	0
9	1	4	7 (14)	2 (8.7)	0	0
10	1	16	4 (8)	3 (13)	1 (33.3)	0
11	1	6	0 (0)	0 (0)	0	0
12	1	6	0 (0)	0 (0)	0	0
14	1	3	0 (0)	0 (0)	0	0
16	1	1	0 (0)	0 (0)	0	0
18	1	1	1 (2)	1(4.3)	0	0
19	1	1	0 (0)	0 (0)	0	0
Group Total		106	50	23	3	1
1	0	45	41 (25)	19 (38)	3 (16)	5 (50)
2	0	26	42 (26)	12 (24)	7 (37)	2 (20)
3	0	19	35 (22)	7 (14)	6 (32)	2 (20)
4	0	6	4 (3)	2 (4)	0	0
5	0	20	12 (7)	5 (10)	1 (5)	0
6	0	8	13 (8)	3 (6)	1 (5)	1 (10)
15	0	1	0 (0)	0 (0)	0	0
17	0	2	7 (4)	0 (0)	0	0
13	0	3	8 (5)	2 (4)	1 (5)	0
Group Total		130	162	50	19	10

Treatment 0=usual practice, 1= program, isolate transmission is the number of transmitted isolates recovered among all cases by surgeon; any transmission is the number of cases by surgeon where at least one transmission event was detected with or between cases; and between transmission is that which occurred between patient care environments.