Group 1 (0.9% infected) (n = 27 of 3105)

Group 2 (0.6% infected) (n = 44 of 7537)

Group 3 (0.3% infected) (n = 16 of 4573)

S. aureus [9] (33%)

S. aureus [20] (45%)

S. aureus [8] (50%)

S. epiermidis [6] (22%)

†S. aureus [1] (2%)

*S. aureus [2] (13%)

*S. epidermidis [1] (4%)

S. epidermidis [5] (11%)

S. epidermidis [2] (13%)

**P. aeroginous [4] (15%)

*S. epidermidis [1] (2%)

Corynebacteria [1] (6%)

Group D Entercoccus [3] (11%)

**P. aeroginous [3] (7%)

Peptostreptococcus [1] (6%)

Strep. pyogenes [2] (7%)

Group B Streptococcus [4] (9%)

Enetrococcus faecalis [1] (6%)

Klebsiella oxytoca [1] (4%)

Strep. pyogenes [2] (5%)

Sterp. viridans [1] (6%)

Enterbacter cloacae [1] (4%)

Corynebacteria [1] (2%)

Strep. viridans [2] (5%)

Group D Entercoccus [1] (2%)

Klebsiella oxytoca [1] (2%)

Enterbacter cloacae [1] (2%)

†Serratia marcescens [1] (2%)

Pasturella multocida [1] (2%)

E. coli [1] (2%)

Staph. lugdunensis [1] (2%)